{"id":4847,"date":"2021-08-27T15:12:14","date_gmt":"2021-08-27T07:12:14","guid":{"rendered":"http:\/\/www.comtest.cn\/?p=4847"},"modified":"2021-08-27T15:12:18","modified_gmt":"2021-08-27T07:12:18","slug":"qsfp-dd-%e6%a8%a1%e5%9d%97%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"http:\/\/www.comtest.cn\/?p=4847","title":{"rendered":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5"},"content":{"rendered":"<p><strong>400G \u548c QSFP-DD<\/strong><\/p><p>QSFP-DD \u5149\u6a21\u5757\u662f 400G \u5ba2\u6237\u4fa7\u63a5\u53e3\u7684\u4e3b\u6d41\u5c01\u88c5\u89c4\u683c\u3002\u672c\u767d\u76ae\u4e66\u4e3a\u6a21\u5757\u5f00\u53d1\u4eba\u5458\u3001\u7f51\u7edc\u5143\u4ef6\u5236\u9020\u5546\u548c\u6700\u7ec8\u7528\u6237\u5206\u4eab\u4e86 QSFP-DD \u6a21\u5757\u6210\u529f\u6d4b\u8bd5\u3001\u6545\u969c\u6392\u67e5\u548c\u9a8c\u8bc1\u7684\u5173\u952e\u56e0\u7d20\u3002<\/p><p>\u5ba2\u6237\u4fa7\u63a5\u53e3\u901f\u5ea6\u7a33\u6b65\u589e\u957f\uff0c\u5178\u578b\u7684\u901f\u7387\u6bcf\u5341\u5e74\u81f3\u5c11\u589e\u52a0\u5341\u500d\u3002100GE \u5df2\u7ecf\u901a\u8fc7 QSFP28 \u63a5\u53e3\u5e7f\u6cdb\u90e8\u7f72\uff0c\u6211\u4eec\u6b63\u5904\u4e8e 400G \u90e8\u7f72\u7684\u65e9\u671f\u9636\u6bb5\u3002\u4f5c\u4e3a 2017 \u5e74 12 \u6708\u6b63\u5f0f\u6807\u51c6\u5316\u7684 802.3.bs \u7684\u4e00\u90e8\u5206\uff0cIEEE \u5f00\u53d1\u4e86 400G \u4ee5\u592a\u7f51\u5ba2\u6237\u4fa7\u63a5\u53e3\u6807\u51c6\u3002\u65e9\u671f\u91c7\u7528\u8005\u4f7f\u7528\u7684\u662f CFP8\u5c01\u88c5\u89c4\u683c\uff0c\u4f46\u66f4\u5e7f\u6cdb\u7684\u5e02\u573a\u5173\u6ce8\u7684\u662f QSFP-DD\uff0c\u5b83\u5141\u8bb8\u4e0e\u5e7f\u6cdb\u91c7\u7528\u7684 QSFP28 \u5b9e\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5411\u540e\u517c\u5bb9\u3002<\/p><p>\u7531\u4e8e\u4ee5\u592a\u7f51\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u8303\u56f4\uff0c\u5e76\u53ef\u63d0\u4f9b\u4e00\u7cfb\u5217 PMD\uff08\u7269\u7406\u4ecb\u8d28\u76f8\u5173\uff09\u9009\u9879\uff0c\u56e0\u6b64\u5141\u8bb8\u4e00\u4e2a\u201cQSFP-DD\u201d\u63d2\u69fd\u652f\u6301\u5927\u91cf\u5e94\u7528\uff0c\u8986\u76d6\u8303\u56f4\u4ece\u51e0\u7c73\u957f\u7684\u65e0\u6e90\u94dc\u7f06 DAC \u7535\u7f06\u5230 80 \u5343\u7c73\u76f8\u5e72 ZR\u3002\u8fd8\u6709\u5c11\u6570\u516c\u53f8\u4e13\u6ce8\u4e8e OSFP(4) \u5c01\u88c5\u89c4\u683c\u3002\u867d\u7136\u4e0d\u662f\u90a3\u4e48\u5e7f\u6cdb\u548c\u5411\u540e\u517c\u5bb9\uff0c\u4f46\u5b83\u786e\u5b9e\u5728\u7535\u4fe1\u53f7\u5b8c\u6574\u6027\u548c\u70ed\u7ba1\u7406\u65b9\u9762\u63d0\u4f9b\u4e86\u4e00\u4e9b\u4f18\u52bf\u3002\u4ee5\u4e0b\u6709\u5173 QSFP-DD \u7684\u5927\u90e8\u5206\u5185\u5bb9\u9002\u7528\u4e8e OSFP \u548c VIAVI ONT \u7cfb\u5217\uff0c\u8be5\u7cfb\u5217\u652f\u6301\u8bb8\u591a\u57fa\u4e8e OSFP \u7684\u5e94\u7528\u3002<\/p><p>400G \u5bf9\u7535\u6a21\u5757\u5230\u4e3b\u673a\u63a5\u53e3\u4ee5\u53ca\u7535\u53e3\u6216\u5149\u5c42 PMD \u90fd\u4f9d\u8d56\u4e8e\u9ad8\u9636 (PAM-4) \u8c03\u5236\u3002\u91c7\u7528 PAM-4 \u8c03\u5236\u662f\u4e3a\u4e86\u5728\u7ed9\u5b9a\u5e26\u5bbd\u4e0b\u6700\u5927\u9650\u5ea6\u5730\u63d0\u9ad8\u6570\u636e\u5bb9\u91cf\uff0c\u4f46\u5b83\u5728\u590d\u6742\u6027\u548c\u6027\u80fd\u65b9\u9762\u5e26\u6765\u4e86\u5de8\u5927\u6311\u6218\uff0c\u8fd9\u4e5f\u610f\u5473\u7740\u94fe\u8def\u9700\u8981\u524d\u5411\u7ea0\u9519 (FEC) \u7f16\u7801\u624d\u80fd\u5b9e\u73b0\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\u3002<\/p><h1 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9009\u62e9 QSFP-DD\uff1f<\/h1><p>100G \u4ee5\u592a\u7f51\u4e8e 2008 \u5e74\u5f00\u59cb\u90e8\u7f72\uff0c\u65e9\u671f\u8bbe\u8ba1\u57fa\u4e8e CFP \u53ef\u63d2\u62d4\u6a21\u5757\u3002\u7b2c\u4e8c\u4ee3\u7cfb\u7edf\u8fc1\u79fb\u5230 CFP2\uff08\u6216\u4e00\u5bb6\u5927\u578b\u8bbe\u5907\u5236\u9020\u5546\u7684 CPAK\uff09\uff0c\u7136\u540e\u9009\u62e9\u4e86 QSFP28\uff0c\u8fd9\u63a8\u52a8\u4e86\u5e7f\u6cdb\u4e14\u7ecf\u6d4e\u9ad8\u6548\u7684\u6279\u91cf\u91c7\u7528\u3002CFP4 \u5bf9 QSFP28 \u6765\u8bf4\u662f\u7a0d\u65e9\u7684\u6311\u6218\uff0c\u4f46\u7531\u4e8e\u591a\u79cd\u56e0\u7d20\uff0cQSFP 28 \u63a8\u52a8\u4e86 100G \u7684\u5927\u5e45\u589e\u957f\u3002\u4e1a\u754c\u6ce8\u610f\u5230\u4e86\u201c\u5c01\u88c5\u89c4\u683c\u201d\u4e4b\u6218\uff0c\u5e76\u5e0c\u671b\u5c06 400G \u7684\u591a\u6b65\u5c01\u88c5\u89c4\u683c\u6f14\u53d8\u5e26\u6765\u7684\u989d\u5916\u590d\u6742\u6027\u548c\u6210\u672c\u6311\u6218\u964d\u81f3\u6700\u4f4e\u3002CFP8 \u5141\u8bb8\u975e\u5e38\u65e9\u671f\u7684\u91c7\u7528\u8005\u5f00\u53d1\u548c\u9a8c\u8bc1 400G\u3002\u7136\u800c\uff0c\u5b83\u6ca1\u6709\u6ee1\u8db3\u5bc6\u5ea6\u3001\u529f\u7387\u3001\u6210\u672c\u548c\u201c\u517c\u5bb9\u6027\u201d\u7684\u9700\u6c42\uff0c\u56e0\u6b64\u4e1a\u754c\u5f88\u5feb\u5c06 QSFP-DD \u4f5c\u4e3a\u76ee\u6807\u5c01\u88c5\u89c4\u683c\u3002\u6709\u4eba\u63d0\u51fa\u4e86\u66ff\u4ee3\u65b9\u6848 \u2013 OSFP\u3002\u5b83\u63d0\u4f9b\u4e86\u5353\u8d8a\u7684\u6280\u672f\u89e3\u51b3\u65b9\u6848\uff0c\u4f46\u65e0\u6cd5\u6ee1\u8db3\u5bf9\u4f20\u7edf\u9057\u7559\u6a21\u5757\u63a5\u53e3\u652f\u6301\u7684\u8feb\u5207\u9700\u6c42\u3002\u539f\u5219\u4e0a\uff0cQSFP-DD \u63d2\u5ea7\u53ef\u4ee5\u652f\u6301\u4f20\u7edf\u7684 QSFP-28 \u5149\u6a21\u5757 \u2013 \u8fd9\u5c06\u5141\u8bb8\u4f9b\u5e94\u5546\u53d1\u8d27\u201c400G \u5c31\u7eea\u201d\u7f51\u5143\uff0c\u8fd9\u4e9b\u7f51\u5143\u4eca\u5929\u53ef\u4ee5\u4e0e 100G \u6a21\u5757\u4e00\u8d77\u53d1\u8d27\uff0c\u73b0\u573a\u5347\u7ea7\u5c06\u662f\u7b80\u5355\u7684\u6a21\u5757\u66f4\u6362\u3002<\/p><p>\u4e3a\u4e86\u6ee1\u8db3\u5411 400G \u8fc8\u8fdb\u6240\u5e26\u6765\u7684\u66f4\u9ad8\u5e26\u5bbd\u3001\u529f\u7387\u548c\u51b7\u5374\u9700\u6c42\uff0c\u5bf9\u73b0\u6709\u7684 QSFP28 \u6982\u5ff5\u8fdb\u884c\u4e86\u51e0\u9879\u589e\u5f3a\u3002\u8fd9\u4e9b\u589e\u5f3a\u5305\u62ec\u5c06\u9ad8\u901f\u7535\u53e3\u901a\u9053\u589e\u52a0\u4e00\u500d\uff08\u4ece 4 \u901a\u9053 25 Gbps \u7684 NRZ\u589e\u5f3a\u5230 8 \u901a\u9053 56 Gbps \u7684 PAM-4\uff09\uff0c\u4ee5\u53ca\u5ef6\u957f\u6a21\u5757\u7684\u201c\u524d\u7aef\u201d\uff0c \u4ee5\u63d0\u4f9b\u66f4\u5927\u7684\u5185\u90e8\u4f53\u79ef\u548c\u589e\u5f3a\u7684\u70ed\u6027\u80fd\u3002 \u6b64\u5916\uff0c\u8fd8\u8fdb\u884c\u4e86\u8fdb\u4e00\u6b65\u7684\u5de5\u4f5c\uff0c\u4ee5\u589e\u5f3a\u6a21\u5757\u63a7\u5236\u63a5\u53e3\uff0c\u4ece\u800c\u4ea7\u751f CMIS 4.0 \u6807\u51c6\u3002<\/p><p><strong>400G DR4 \u6a21\u5757\uff0c500 \u7c73\uff0c4 \u4e2a\u5e76\u884c SMF \u6ce2\u957f\u8303\u56f4\uff1a1304.5 \u81f3 1317.5 \u7eb3\u7c73<\/strong><\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"650\" height=\"498\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01.jpg\" alt=\"\" class=\"wp-image-4848\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01.jpg 650w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01-300x230.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01-600x460.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_01-64x49.jpg 64w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/a><\/figure><\/div><p>DR4 \u5c06\u662f 2020 \u5e74\u90e8\u7f72\u7684\u6700\u5e38\u89c1\u7684 400G \u5ba2\u6237\u4fa7\u5149\u63a5\u53e3\u4e4b\u4e00\u3002\u5b83\u5728\u5355\u72ec\u7684\u5355\u6a21\u5149\u7ea4\u4e0a\u4ee5\u56db\u4e2a 100G \u4fe1\u53f7\u7684\u5f62\u5f0f\u4f20\u8f93 400G\u3002\u5b83\u5728\u4f01\u4e1a\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u5b83\u652f\u6301 500 \u7c73\u7684\u8986\u76d6\u8303\u56f4\uff0c\u5e76\u4e14\u80fd\u591f\u8fde\u63a5\u5230\u5355\u72ec\u7684 100G \u4ee5\u592a\u7f51\u94fe\u8def\uff0c\u4f5c\u4e3a\u9ad8\u5bc6\u5ea6\u7684 100G \u89e3\u51b3\u65b9\u6848\u5f88\u6709\u5438\u5f15\u529b\uff0c\u8fd9\u53ef\u4ee5\u4f7f\u7aef\u53e3\u8ba1\u6570\u5bc6\u5ea6\u63d0\u9ad8\u56db\u500d\u3002<\/p><p><strong>400G FR4 \u6a21\u5757\uff0cSMF\uff0c\u8ddd\u79bb 2 \u5343\u7c73PAM-4 \u7535\u53e3\uff0cIEEE \u6807\u51c6\u63a5\u53e3<\/strong><\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02.jpg\"><img decoding=\"async\" width=\"650\" height=\"442\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02.jpg\" alt=\"\" class=\"wp-image-4849\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02.jpg 650w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02-300x204.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02-600x408.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_02-64x44.jpg 64w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/a><\/figure><\/div><p>FR4 \u63a5\u53e3\u4e5f\u5c06\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u5305\u62ec\u7535\u4fe1\u9886\u57df\u3002\u5b83\u901a\u8fc7\u4e00\u6839\u5355\u6a21\u5149\u7ea4\u63d0\u4f9b 2 \u5343\u7c73\u7684\u66f4\u957f\u94fe\u8def\u9884\u7b97\u3002400G \u7531\u56db\u4e2a 100G \u4fe1\u53f7\u627f\u8f7d\uff0c\u6bcf\u4e2a\u4fe1\u53f7\u7684\u6ce2\u957f\u7565\u6709\u4e0d\u540c\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03.jpg\"><img decoding=\"async\" width=\"700\" height=\"419\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03.jpg\" alt=\"\" class=\"wp-image-4850\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03-300x180.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03-570x342.jpg 570w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03-600x359.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_03-64x38.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><h1 class=\"wp-block-heading\">400G PMD \u6a21\u5757\uff08\u7269\u7406\u4ecb\u8d28\u76f8\u5173\uff09<\/h1><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>PMD<\/strong><\/td><td><strong>\u8303\u56f4<\/strong><strong><\/strong><\/td><td><strong>\u5e94\u7528<\/strong><strong><\/strong><\/td><td><strong>\u6280\u672f<\/strong><strong><\/strong><\/td><\/tr><tr><td>DAC<\/td><td>2 \u5230 3 \u7c73<\/td><td>\u673a\u67b6\u5185\u548c\u670d\u52a1\u5668<\/td><td>\u65e0\u6e90\u94dc\u7f06\u300150G PAM-4 \u7535\u53e3<\/td><\/tr><tr><td>SR8<\/td><td>100 \u7c73<\/td><td>\u4f01\u4e1a<\/td><td>\u5e76\u884c\u591a\u6a21\u300250G\/\u03bb \u2013 PAM-4<\/td><\/tr><tr><td>DR4<\/td><td>500 \u7c73<\/td><td>\u6570\u636e\u4e2d\u5fc3\u548c\u4f01\u4e1a<\/td><td>\u5e76\u884c\u5355\u6a21\uff0c100G\/\u03bb \u2013 PAM-4<\/td><\/tr><tr><td>FR4<\/td><td>2 \u5343\u7c73<\/td><td>\u5927\u89c4\u6a21\u6570\u636e\u4e2d\u5fc3<\/td><td>\u5355\u6a21\uff0c100G\/\u03bb\uff0cPAM-4<\/td><\/tr><tr><td>LR8<\/td><td>10 \u5343\u7c73<\/td><td>\u7535\u4fe1\u8ddd\u79bb<\/td><td>\u5355\u6a21\uff0c100G\/\u03bb\uff0cPAM-4<\/td><\/tr><tr><td>ZR<\/td><td>80 \u5343\u7c73<\/td><td>\u57ce\u57df\u7f51\u548c DCI<\/td><td>\u5355\u6a21\/\u76f8\u5e72\uff0cPAM-4<\/td><\/tr><\/tbody><\/table><\/figure><h1 class=\"wp-block-heading\">QSFP-DD \u6a21\u5757 \u2013 \u6807\u51c6\u548c\u4e3b\u9898<\/h1><p>\u6b63\u5982\u6211\u4eec\u4ece\u4e0a\u9762\u7684\u53c2\u8003\u6587\u732e\u4e2d\u770b\u5230\u7684\uff0c\u8bb8\u591a\u6807\u51c6\u548c MSA \u90fd\u662f\u9002\u7528\u7684\u3002\u4e86\u89e3\u5f00\u53d1\u5468\u671f\u6bcf\u4e2a\u9636\u6bb5\uff08\u4ece\u57fa\u672c IC \u8bc4\u4f30\u5230\u6a21\u5757\u786c\u4ef6\u96c6\u6210\u3001\u8f6f\u4ef6\u548c\u56fa\u4ef6\uff0c\u518d\u5230\u4f9b\u5e94\u5546\u9009\u62e9\u548c\u9a8c\u6536\uff09\u7684\u5173\u952e\u6d4b\u8bd5\u4e5f\u5f88\u91cd\u8981\u3002\u751f\u4ea7\u4e5f\u6709\u81ea\u5df1\u7684\u4e00\u5957\u5173\u952e\u6d4b\u8bd5\u8981\u6c42\u3002<\/p><p>\u8981\u6210\u529f\u8bbe\u8ba1\u3001\u6d4b\u8bd5\u3001\u9a8c\u8bc1\u3001\u5236\u9020\u548c\u90e8\u7f72\u53ef\u63d2\u62d4\u5149\u5b66\u6a21\u5757\u548c\u5668\u4ef6\uff0c\u9700\u8981\u5bf9 IEEE\u3001CMIS\u3001QSFP-DD\u3001MSA \u548c OIF \u7b49\u5173\u952e\u6587\u6863\u6709\u624e\u5b9e\u7684\u7406\u89e3\u3002QSFP-DD \u662f\u7535\u5b50\u3001\u5149\u5b66\u3001\u673a\u68b0\u3001\u70ed\u7ba1\u7406\u548c\u56fa\u4ef6\u7684\u5b8c\u7f8e\u96c6\u6210\u7ec4\u5408\u3002\u5728\u6210\u529f\u90e8\u7f72\u6a21\u5757\u4e4b\u524d\uff0c\u6240\u6709\u7ec4\u4ef6\u5fc5\u987b\u534f\u540c\u5de5\u4f5c\u3002<\/p><h2 class=\"wp-block-heading\">\u4e92\u64cd\u4f5c\u6027<\/h2><p>\u4ee5\u592a\u7f51\u5ba2\u6237\u4fa7\u63a5\u53e3\u751f\u6001\u7cfb\u7edf\u7684\u6700\u5927\u4f18\u70b9\u5728\u4e8e\uff0c\u6211\u4eec\u62e5\u6709\u4e00\u5957\u7531 IEEE \u548c\u5176\u4ed6\u6807\u51c6\u9a71\u52a8\u7684\u5f3a\u5927\u800c\u6e05\u6670\u7684\u6807\u51c6\uff0c\u8fd9\u4e9b\u6807\u51c6\u5141\u8bb8\u591a\u4f9b\u5e94\u5546\u751f\u6001\u7cfb\u7edf\u5728\u4e0d\u6c42\u52a9\u4e8e\u201c\u5de5\u7a0b\u201d\u94fe\u8def\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u4e92\u64cd\u4f5c\u3002<\/p><p>\u6a21\u5757\u5230\u4e3b\u673a\u63a5\u53e3\u548c\u5149\u7ea4\u63a5\u53e3\u90fd\u662f\u8fd9\u79cd\u4e92\u64cd\u4f5c\u7684\u5173\u952e\u3002\u5728\u4e3b\u673a\u5230\u6a21\u5757\u63a5\u53e3\u4e0a\uff0c\u6211\u4eec\u4e3b\u8981\u5173\u6ce8\u4e09\u4e2a\u65b9\u9762\uff1a<\/p><ul class=\"wp-block-list\"><li>\u4ece\u82af\u7247\u5230\u6a21\u5757 (C2M) \u6784\u5efa\u7684\u9ad8\u901f\u6570\u636e\u8def\u5f84 (AUI) \u9762\u4e34\u591a\u91cd\u6311\u6218\uff0c\u5305\u62ec\u4fe1\u53f7\u5b8c\u6574\u6027\u548c\u4fe1\u53f7\u5747\u8861\u3002\u867d\u7136 FEC \u9884\u7b97\u7684\u4e00\u90e8\u5206\u88ab\u5206\u914d\u7ed9\u8fd9\u90e8\u5206\u94fe\u8def\uff0c\u4f46\u6b64\u63a5\u53e3\u7684\u4efb\u4f55\u95ee\u9898\u90fd\u53ef\u80fd\u5bfc\u81f4\u94fe\u8def\u51fa\u73b0\u91cd\u5927\u95ee\u9898\u3002\u201c\u8c03\u8c10\u201d\u4e0d\u597d\u7684\u94fe\u8def\uff08\u5c31\u5747\u8861\u5668\u548c\u4fe1\u9053\u800c\u8a00\uff09\u53ef\u80fd\u4f1a\u5bfc\u81f4\u96be\u4ee5\u89e3\u51b3\u7684\u95ee\u9898\uff0c\u4f8b\u5982\u968f\u673a\u7a81\u53d1\u6216\u6700\u7cdf\u7cd5\u7684\u5076\u7136\u6bd4\u7279\u6ed1\u52a8\u60c5\u51b5\u3002<\/li><li>\u6a21\u5757\u7ba1\u7406\u2013 \u8fd9\u79cd\u57fa\u4e8e I\u00b2C \u7684\u63a5\u53e3\u5df2\u4ece SFF-8636 \u7684\u57fa\u672c\u5185\u5b58\u6620\u5c04\u7ba1\u7406\u53d1\u5c55\u5230 100G \u7684 QSFP28\uff0c\u518d\u5230\u590d\u6742\u7684\u72b6\u6001\u5b8c\u6574\u7684 CMIS 4.0\u3002\u8fd9\u4e00\u6f14\u53d8\u5bf9\u751f\u6001\u7cfb\u7edf\u6765\u8bf4\u6781\u5177\u6311\u6218\u6027\uff0c\u624e\u5b9e\u7684 CMIS 4.0 \u6587\u6863\u5de5\u4f5c\u77e5\u8bc6\u662f\u5065\u58ee\u7a33\u5b9a\u7684\u6a21\u5757\u7ba1\u7406\u7684\u5173\u952e\u3002<\/li><li>\u6a21\u5757\u529f\u7387 &#8212; \u5bf9\u4e8e DCI \u5e94\u7528\u7684\u53ef\u63d2\u62d4\u76f8\u5e72 (QSFP-DD ZR) \u6a21\u5757\uff0c\u6a21\u5757\u7684\u529f\u7387\u9700\u6c42\u5df2\u4ece 100G \u65f6\u7684\u51e0\u74e6\u6500\u5347\u81f3\u53ef\u80fd\u63a5\u8fd1 20W\u3002\u8fd9\u5c31\u5bf9\u7535\u6e90\u7684\u5065\u58ee\u6027\u548c\u7a33\u5b9a\u6027\u63d0\u51fa\u4e86\u5f88\u9ad8\u7684\u8981\u6c42\u3002\u6b64\u5916\uff0c\u5b83\u8fd8\u5fc5\u987b\u80fd\u591f\u5728\u6a21\u5757\u5524\u9192\u65f6\u63d0\u4f9b\u7535\u529b\u9700\u6c42\u7684\u52a8\u6001\u548c\u77ac\u53d8\u7279\u6027\u3002<\/li><\/ul><p>\u8fd9\u4e9b\u9886\u57df\u90fd\u662f\u7d27\u5bc6\u4ea4\u7ec7\u5728\u4e00\u8d77\u7684\uff0c\u9700\u8981\u4f5c\u4e3a\u4e00\u4e2a\u6574\u4f53\u6765\u5bf9\u5f85\uff08\u7279\u522b\u662f\u5728 CMIS 4.0 \u6a21\u5757\u7ba1\u7406\u65b9\u9762\uff09\uff0c\u4ee5\u786e\u4fdd\u6a21\u5757\u8fd0\u884c\u65e0\u6545\u969c\u3002<\/p><h1 class=\"wp-block-heading\">PAM-4<\/h1><p>\u7535\uff08\u6a21\u5757\u5230\u4e3b\u673a\u63a5\u53e3\uff09\u548c\u5149\uff08\u7535\uff09\u94fe\u8def\u5747\u91c7\u7528 PAM-4 \u8c03\u5236\u3002\u8fd9\u79cd\u66f4\u9ad8\u9636\u7684\u8c03\u5236\u65b9\u6848\u5141\u8bb8\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u53d1\u9001\u7684\u6bd4\u7279\u6570\u7ffb\u500d\u3002\u867d\u7136 NRZ \u6280\u672f\u5728\u9ad8\u901f\u65b9\u9762\u5df2\u7ecf\u5e7f\u6cdb\u5e94\u7528\u548c\u6210\u719f\uff0c\u4f46 SERDES PAM-4 \u662f\u4e00\u9879\u76f8\u5bf9\u8f83\u65b0\u7684\u6280\u672f\uff0c\u66f4\u590d\u6742\u548c\u66f4\u5177\u6311\u6218\u6027\u3002\u6211\u4eec\u5728 NRZ \u94fe\u8def\u7684\u8bef\u7801\u5206\u6790\u65b9\u9762\u6709\u4e30\u5bcc\u7684\u7ecf\u9a8c\u3002\u4f46\u662f\u6211\u4eec\u4ecd\u7136\u770b\u5230\u5728 100GE \u4f7f\u7528\u7684\u4ece 10G \u5230 25G NRZ \u901a\u9053\u7684\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u8f6c\u5411 PAM-4 \u9884\u8ba1\u5c06\u662f\u6574\u4e2a\u884c\u4e1a\u7684\u91cd\u5927\u6311\u6218\u3002\u4f7f\u7528\u57fa\u4e8e FEC \u7684\u94fe\u8def\uff08\u603b\u662f\u6709\u540e\u53f0\u8bef\u7801\u7387\uff09\u548c\u590d\u6742\u5f97\u591a\u7684\u4fe1\u9053\u5747\u8861\u4f7f\u8fd9\u4e00\u70b9\u53d8\u5f97\u66f4\u52a0\u590d\u6742\u3002\u516c\u5e73\u5730\u8bf4\uff0cPAM-4 \u6bd4\u5e7f\u6cdb\u4f7f\u7528\u7684 25G NRZ \u590d\u6742\u4e00\u4e2a\u6570\u91cf\u7ea7\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"702\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04.jpg\" alt=\"\" class=\"wp-image-4851\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-300x301.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-150x150.jpg 150w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-120x120.jpg 120w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-105x105.jpg 105w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-380x380.jpg 380w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-285x285.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-600x602.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-100x100.jpg 100w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_04-64x64.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><figcaption>\u56fe\u50cf\u663e\u793a\u4e86 NRZ \u548c PAM-4 \u4fe1\u53f7<\/figcaption><\/figure><\/div><h1 class=\"wp-block-heading\">FEC<\/h1><p>\u7531\u4e8e\u5f00\u53d1\u80fd\u591f\u63d0\u4f9b\u65e0\u5dee\u9519 PAM-4 \u4f20\u8f93\u7684\u7ec4\u4ef6\u6781\u5177\u6311\u6218\u6027\uff0c\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u4e86\u4e00\u79cd FEC\uff0c\u5b83\u53ef\u4ee5\u540c\u65f6\u4fdd\u62a4\u7535\u6c14\u6a21\u5757\u63a5\u53e3\u4ee5\u53ca\u5149\u5b66\u6a21\u5757\u5230\u6a21\u5757\u63a5\u53e3\u3002\u6211\u4eec\u82b1\u8d39\u4e86\u5927\u91cf\u7cbe\u529b\uff0c\u4ed4\u7ec6\u7406\u89e3\u4e86\u4f20\u8f93\u4fe1\u9053\u548c\u7ec4\u4ef6\u4e2d\u7684\u8bef\u7801\u673a\u5236\uff0c\u4ee5\u53ca\u5982\u4f55\u4ee5 FEC \u903b\u8f91\uff08\u7f16\u7801\u548c\u63a5\u6536\uff09\u7aef\u7684\u201c\u6210\u672c\u201d\u6765\u8fdb\u884c\u5747\u8861\u8bbe\u5b9a\u3002FEC \u7684\u201c\u6210\u672c\u201d\u5305\u62ec\u989d\u5916\u7684\u7535\u8def\uff0c\u8fd9\u4e9b\u7535\u8def\u4f1a\u6d88\u8017\u7535\u529b\uff0c\u5e76\u4f1a\u589e\u52a0\u4efb\u4f55\u94fe\u8def\u7684\u5ef6\u8fdf\u3002<\/p><h1 class=\"wp-block-heading\">DSP \u548c\u5747\u8861\u5668<\/h1><p>\u5728\u91c7\u7528 400G \u65f6\uff0c\u51b3\u5b9a\u4f7f\u7528\u201c\u5f3a\u5927\u7684\u201d\u7535\u63a5\u6536\u5747\u8861\u5668\u7684\u6982\u5ff5\uff0c\u6765\u9762\u5bf9\u201c\u6700\u574f\u60c5\u51b5\u201d\u53d1\u5c04\u673a\u548c\u201c\u6700\u574f\u60c5\u51b5\u201d\u4fe1\u9053\u7684\u6027\u80fd\u3002\u8fd9\u53ef\u80fd\u5bfc\u81f4 PAM-4 \u63a5\u6536\u5668\u8f93\u5165\u7aef\u7684 PAM-4 \u773c\u56fe\u95ed\u5408\uff0c\u56e0\u6b64 PAM-4 \u63a5\u6536\u5668\u9700\u8981\u4e00\u4e2a\u5f3a\u5927\u4e14\u53ef\u80fd\u590d\u6742\u7684\u63a5\u6536\u5668\u6765\u5e73\u8861\u53d1\u5c04\u548c\u4fe1\u9053\u5f71\u54cd\uff0c\u4ee5\u4fbf\u6062\u590d\u6e05\u6670\u7684\u773c\u56fe\u6765\u5b9e\u73b0\u5bf9\u7ed9\u5b9a\u7801\u5143\u7684\u6b63\u786e\u89e3\u7801\u3002\u5747\u8861\u5668\u7684\u590d\u6742\u6027\u610f\u5473\u7740\uff0c\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5fc5\u987b\u5b9e\u65bd\u57fa\u4e8e DSP \u7684\u89e3\u51b3\u65b9\u6848\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bf9\u529f\u7387\u3001\u5ef6\u8fdf\u3001\u590d\u6742\u6027\u3001\u8bef\u7801\u6027\u80fd\u548c\u7ba1\u7406\/\u63a7\u5236\u4ea7\u751f\u5f71\u54cd\u3002\u867d\u7136 DSP \u5747\u8861\u5668\u529f\u80fd\u5f3a\u5927\uff0c\u4f46\u529f\u80fd\u7684\u590d\u6742\u6027\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5728\u5bfb\u627e\u62bd\u5934\u7684\u6700\u4f73\u8bbe\u7f6e\u7b49\u65b9\u9762\u9047\u5230\u6311\u6218\u3002\u6b64\u5916\uff0c\u5747\u8861\u5668\u901a\u5e38\u9690\u85cf\u5728 DSP \u56fa\u4ef6\u548c\u63a7\u5236 API \u4e4b\u540e\uff0c\u5bf9\u7528\u6237\u800c\u8a00\u9ad8\u5ea6\u62bd\u8c61\u3002TDECQ6 \u7684\u6d4b\u91cf\u9762\u4e34\u66f4\u591a\u6311\u6218 \u2013 \u6b64\u6d4b\u91cf\u590d\u6742\u4e14\u53ef\u80fd\u4e0d\u4e00\u81f4\uff0c\u8fd9\u8fdb\u4e00\u6b65\u589e\u52a0\u4e86\u81ea\u7531\u4e92\u64cd\u4f5c\u3001\u591a\u4f9b\u5e94\u5546\u751f\u6001\u7cfb\u7edf\u7684\u6311\u6218\u3002<\/p><h1 class=\"wp-block-heading\">\u8981\u70b9<\/h1><p>\u603b\u4f1a\u6709\u8bef\u7801 \u2013 \u94fe\u8def\u73b0\u5728\u603b\u662f\u6709\u540e\u53f0\u8bef\u7801\u7387\u3002\u8bef\u7801\u7edf\u8ba1\u6570\u636e\u201c\u6307\u7eb9\u201d\u81f3\u5173\u91cd\u8981\u3002\u771f\u6b63\u7684\u968f\u673a\u8bef\u7801\u6d41\u901a\u5e38\u4e0e\u7528\u4e8e\u4fdd\u62a4\u94fe\u8def\u7684 FEC \u517c\u5bb9\u3002\u4f46\u662f\u7a81\u53d1\u3001\u6ed1\u52a8\u548c\u5176\u4ed6\u786e\u5b9a\u6027\u95ee\u9898\u53ef\u80fd\u4f1a\u4e25\u91cd\u964d\u4f4e FEC \u7ea0\u9519\u80fd\u529b\u3002\u5728\u771f\u5b9e\u94fe\u8def\u4e2d\uff0c\u8bef\u7801\u53ef\u80fd\u662f\u7535\u548c\u5149\u4fe1\u9053\u566a\u58f0\u3001\u4e32\u6270\u3001\u4fe1\u53f7\u5b8c\u6574\u6027\u95ee\u9898\u3001\u7a81\u53d1\u3001\u6bd4\u7279\u6ed1\u52a8\u751a\u81f3\u9519\u8bef\u8bbe\u7f6e\u5747\u8861\u5668\u5bfc\u81f4\u7684\u8bef\u7801\u589e\u6b96\u7684\u590d\u6742\u6df7\u5408\u3002<\/p><p>\u6700\u7ec8\u91cd\u8981\u7684\u662f\uff0c\u5f53\u7ed9\u5b9a\u4e00\u4e2a\u7279\u5b9a\u7684\u8bef\u7801\u6307\u7eb9\u65f6\uff0cFEC \u5982\u4f55\u6267\u884c\u3002\u4ec0\u4e48\u662f\u4f59\u5730\uff1f \u6211\u4eec\u8fd8\u8981\u591a\u4e45\u624d\u80fd\u6536\u5230\u4e22\u5f03\u7684\u6570\u636e\u5305\uff1f \u6211\u4eec\u80fd\u5426\u9884\u6d4b\u957f\u671f\u6027\u80fd\u4ee5\u4e86\u89e3\u94fe\u8def\u9000\u5316\u60c5\u51b5\uff1f\u8bef\u7801\u7684\u6839\u672c\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/p><p>\u53ef\u4ee5\u4f7f\u7528\u51e0\u79cd\u5de5\u5177\u6765\u8c03\u67e5\u8bef\u7801\u6307\u7eb9\uff0c\u4ece\u5355\u4e2a PAM-4 \u7801\u5143\u4e2d\u7684\u9519\u8bef\u504f\u5dee\u5230\u6bd4\u7279\u6ed1\u52a8\u6027\u8d28\u7a81\u53d1\u5206\u6790\u3002\u901a\u8fc7\u65f6\u949f\u53d8\u5316\u548c skew \u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u589e\u5f3a\u5bf9\u8bef\u7801\u504f\u5dee\u7684\u7406\u89e3\u3002<\/p><p>PAM-4 \u7801\u5143\u5206\u6790\u53ef\u4ee5\u7528\u6765\u786e\u4fdd\u5728\u8bef\u7801\u5206\u5e03\u4e2d\u6ca1\u6709\u201c\u7535\u5e73\u201d\u504f\u5dee\u3002\u5173\u952e\u5149\u5b50\u5143\u4ef6\uff08\u4f8b\u5982\u63a5\u6536\u5668\u5149\u5b50 AGC\uff09\u7684\u7a33\u5b9a\u6027\u53ef\u4ee5\u901a\u8fc7\u89c2\u5bdf PAM-4 \u8bef\u7801\u5206\u5e03\u65f6\u5149\u529f\u7387\u7684\u53d8\u5316\uff08\u901a\u8fc7\u8870\u51cf\u5668\uff09\u6765\u8fdb\u4e00\u6b65\u9a8c\u8bc1\u3002<\/p><p>\u91cd\u8981\u7684\u662f\u8981\u5168\u9762\u8c03\u67e5\u8bef\u7801\u7a81\u53d1\uff0c\u5e76\u786e\u8ba4\u5b83\u4eec\u662f\u7a81\u53d1\u800c\u4e0d\u662f\u6bd4\u7279\uff08\u6216\u7801\u5143\uff09\u6ed1\u52a8\u3002\u6ed1\u52a8\u901a\u5e38\u4e0e DSP\uff08\u548c\u76f8\u5173\u56fa\u4ef6\uff09\u6709\u5173\uff0c\u65e0\u6cd5\u901a\u8fc7 FEC \u8fdb\u884c\u7ea0\u6b63\u3002\u4e00\u822c\u7684\u6d4b\u8bd5\u65e0\u6cd5\u533a\u5206\u7531\u7ecf\u5178\u4fe1\u53f7\u5b8c\u6574\u6027\u6216\u566a\u58f0\u95ee\u9898\u5f15\u8d77\u7684\u7a81\u53d1\u95ee\u9898\uff0c\u4ee5\u53ca\u4e0e\u65f6\u949f\u548c\u76f8\u4f4d\u7075\u654f\u5ea6\u76f8\u5173\u7684\u7a81\u53d1\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u5728\u8c03\u67e5 QSFP-DD \u8bef\u7801\u7684\u6027\u8d28\u548c\u6839\u672c\u539f\u56e0\u65f6\uff0c\u5fc5\u987b\u90e8\u7f72\u5927\u91cf\u7684\u65b0\u5de5\u5177\u548c\u6280\u672f\u3002<\/p><p>\u901a\u8fc7\u67e5\u770b\u6bcf 5440 \u6bd4\u7279 FEC \u7801\u5b57 (KP4 FEC) \u7684 10 \u6bd4\u7279\u7801\u5143\u9519\u8bef\u7684\u6570\u91cf\uff0c\u53ef\u4ee5\u83b7\u5f97\u6700\u7b80\u5355\u7684\u9876\u5c42\u89c6\u56fe\u3002\u6211\u4eec\u901a\u5e38\u671f\u671b\u5355\u8c03\u5206\u5e03\u7684\u6bcf\u7801\u5143\u8ba1\u6570\u4e0b\u964d\u5927\u7ea6 10\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6bcf\u589e\u52a0\u4e00\u4e2a\u9519\u8bef\u7684\u7801\u5143\/\u7801\u5b57\uff0c\u6211\u4eec\u671f\u671b\u8bef\u7801\u6570\u4f1a\u51cf\u5c11 10 \u4e2a\u3002\u4efb\u4f55\u957f\u5c3e\u6216\u5b64\u7acb\u7684\u5cf0\u503c\u90fd\u8868\u660e\u4e86\u67d0\u79cd\u975e\u968f\u673a\u7684\uff08\u7cfb\u7edf\uff09\u539f\u56e0\u3002\u6211\u4eec\u8fd8\u671f\u671b\u9519\u8bef\u7801\u5143\u7684\u6570\u91cf\u5c06\u5728\u6d4b\u91cf\u65f6\u95f4\u5185\u589e\u52a0 10 \u500d\u3002\u56e0\u6b64\uff0c\u5982\u679c\u6211\u4eec\u5728 10 \u79d2\u540e\u89c2\u5bdf\u5230\u6bcf\u4e2a\u7801\u5b57\u6709 10 \u4e2a\u9519\u8bef\u7801\u5143\u7684\u8ba1\u6570\uff0c\u6211\u4eec\u671f\u671b\u5728\u5927\u7ea6 100 \u79d2\u540e\u4f1a\u770b\u5230 11 \u4e2a\u9519\u8bef\u7801\u5143\u8ba1\u6570\u3002<\/p><p>\u8fd9\u6837\u7684\u7ecf\u9a8c\u6cd5\u5219\u53ef\u7528\u4e8e\u4f30\u8ba1\u51fa\u73b0\u4e0d\u53ef\u7ea0\u6b63\u8bef\u7801\u7684\u65f6\u95f4\uff08\u6bcf\u4e2a\u7801\u5b57\u51fa\u73b0 16 \u4e2a\u6216\u66f4\u591a\u9519\u8bef\u7801\u5143\uff09\u3002\u4f8b\u5982\uff0c\u5728 100 \u5c0f\u65f6\u7684\u6d4b\u8bd5\u65f6\u95f4\u4e4b\u540e\uff0c\u5982\u679c\u6211\u4eec\u89c2\u5bdf\u5230\u6700\u591a 12 \u4e2a\u9519\u8bef\u7801\u5143\/\u7801\u5b57\uff0c\u5219\u53ef\u4ee5\u9884\u671f\u4ee5\u4e0b\u8fd1\u4f3c\u503c\uff1a<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td>\u9519\u8bef\u7801\u5143<\/td><td>\u65f6\u95f4<\/td><td>\u6ce8\u91ca<\/td><\/tr><tr><td>12<\/td><td>100 \u5c0f\u65f6<\/td><td>\u6d4b\u91cf<\/td><\/tr><tr><td>13<\/td><td>1000 \u5c0f\u65f6<\/td><td>\u4f30\u8ba1<\/td><\/tr><tr><td>14<\/td><td>\u7ea6 420 \u5929<\/td><td>&nbsp;<\/td><\/tr><tr><td>15<\/td><td>\u7ea6 11 \u00bd \u5e74<\/td><td>&nbsp;<\/td><\/tr><tr><td>16\uff08\u4e0d\u53ef\u7ea0\u6b63\u7684\u7801\u5143\uff09<\/td><td>\u7ea6 114 \u5e74<\/td><td>\u7b2c\u4e00\u4e2a\u4e22\u5f03\u7684\u6570\u636e\u5305 &gt; \u4e00\u4e2a\u4e16\u7eaa<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"wp-block-heading\">FEC \u2013 \u9519\u8bef\u7801\u5143\/\u7801\u5b57 &nbsp;<\/h2><p>\u5728\u4e0b\u9762\u7684\u60c5\u51b5\u4e0b\uff0cONT \u4f7f\u7528\u4e25\u91cd\u8870\u51cf\u7684 400G \u5149\u7ea4\u94fe\u8def\u8fd0\u884c\uff0c\u4ee5\u81f3\u4e8e\u5728 10 \u5206\u949f\u95f4\u9694\u5185\u53d1\u751f\u91cd\u5927\u8bef\u7801\u3002\u8fd9\u662f\u5408\u89c4\u94fe\u8def\u53ef\u80fd\u53d1\u751f\u7684\u9884\u671f\u60c5\u51b5\u3002\u5982\u60a8\u6240\u89c1\uff0c\u5206\u5e03\u4e00\u822c\u662f\u5355\u8c03\u7684\u3002\u6bcf\u4e2a\u9519\u8bef\u7801\u5143\u7684\u8ba1\u6570\u4e0b\u964d\uff0c\u4f46\u5b83\u786e\u5b9e\u663e\u793a\u4e86\u6bd4 12 \u4e2a\u9519\u8bef\u7801\u5143\/\u7801\u5b57\u7a0d\u957f\u7684\u5c3e\u90e8\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u94fe\u8def\u6781\u6709\u53ef\u80fd\u7531\u4e8e\u6709\u672a\u6821\u6b63\u7684\u7801\u5b57\u800c\u4e22\u5f03\u6570\u636e\u5305\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"526\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05.jpg\" alt=\"\" class=\"wp-image-4852\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05-300x225.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05-380x285.jpg 380w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05-285x214.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05-600x451.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_05-64x48.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>\u4e0b\u9762\u7684\u5c4f\u5e55\u622a\u56fe\u663e\u793a\u4e86\u53d1\u751f\u4e25\u91cd\u95ee\u9898\u7684\u60c5\u51b5\u3002\u867d\u7136 FEC \u6709\u5f88\u5927\u7684\u4f59\u91cf\uff08\u6211\u4eec\u5728\u4e00\u4e2a\u7801\u5b57\u4e2d\u6700\u591a\u53ef\u4ee5\u770b\u5230 4 \u4e2a\u9519\u8bef\u7801\u5143\uff09\uff0c\u4f46\u5206\u5e03\u4e0d\u662f\u5355\u8c03\u7684\uff0c\u8fd9\u8868\u660e\u8be5\u7cfb\u7edf\u5b58\u5728\u6f5c\u5728\u7684\u8bef\u7801\u6e90\u3002\u8bf7\u6ce8\u610f\uff0c\u8fd9\u4e2a 100G \u94fe\u8def\u7684\u793a\u4f8b\u662f\u7531\u4e00\u4e2a\u7279\u6b8a\u7684 VIAVI ONT \u5e94\u7528\u7a0b\u5e8f\u751f\u6210\u7684\uff0c\u8be5\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u521b\u5efa\u5e7f\u6cdb\u7684 FEC \u8bef\u7801\u5206\u5e03\uff0c\u4ee5\u5bf9 FEC \u903b\u8f91\u548c\u7535\u6e90\u5b8c\u6574\u6027\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"469\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06.jpg\" alt=\"\" class=\"wp-image-4853\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06-300x201.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06-380x254.jpg 380w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06-285x190.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06-600x402.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_06-64x43.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>ONT \u65e2\u80fd\u591f\u5206\u6790\u6574\u4e2a\u5e8f\u5217\u4e0a\u7684\u8bef\u7801\u5206\u5e03\u548c\u7801\u578b\uff0c\u53c8\u80fd\u591f\u5728\u6bcf\u4e2a PAM-4 \u7801\u5143\u7684\u57fa\u7840\u4e0a\u8ddf\u8e2a\u8bef\u7801\u7279\u6027\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"464\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07.jpg\" alt=\"\" class=\"wp-image-4854\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07-300x199.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07-285x190.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07-600x398.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_07-64x42.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>\u52a8\u6001 skew \u53d8\u5316\u662f\u5bf9 QSFP-DD \u6a21\u5757\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u7684\u5f3a\u5927\u5de5\u5177\u3002\u5b83\u53ef\u7528\u4e8e\u9a8c\u8bc1\u662f\u5426\u7b26\u5408 IEEE 802.3 \u6807\u51c6\uff0c\u4ee5\u53ca DSP \u548c\u76f8\u5173\u56fa\u4ef6\u7684\u603b\u4f53\u7a33\u5b9a\u6027\u3002\u8fd9\u5728 DR4 \u6a21\u5757\u4e2d\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u4e3a\u5728 DR4 \u6a21\u5757\u4e2d\uff0c \u4e00\u5bf9\u5355\u4e2a\u7535\u6c14\u548c\u5149\u5b66\u901a\u9053\u53ef\u80fd\u4f4d\u4e8e\u5b8c\u5168\u4e0d\u540c\u7684\u65f6\u949f\u57df\uff01<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"464\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08.jpg\" alt=\"\" class=\"wp-image-4855\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08-300x199.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08-285x190.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08-600x398.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_08-64x42.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>\u4e0a\u9762\u7684\u5c4f\u5e55\u622a\u56fe\u663e\u793a\u4e86 PAM-4 \u7684\u52a8\u6001 skew \u5e94\u7528\u3002 \u5b83\u80fd\u591f\u7cbe\u786e\u63a7\u5236\u4f20\u8f93\u901a\u9053\u76f8\u5bf9\u4e8e UI \u7684\u76f8\u5bf9\u65f6\u5e8f\uff0c\u540c\u65f6\u4ecd\u7136\u4fdd\u6301\u201c\u65e0\u4e2d\u65ad\u201d\u76f8\u79fb\uff0c\u8fd9\u662f\u89e3\u51b3\u4e32\u6270\u548c\u57fa\u4e8e DSP \u7684\u56fa\u4ef6\u65f6\u5e8f\u95ee\u9898\u7b49\u6311\u6218\u6027\u95ee\u9898\u7684\u5173\u952e\u3002<\/p><p>\u52a8\u6001 skew\uff08\u6216 skew \u53d8\u5316\uff09\u662f\u5bf9\u4efb\u4f55\u5e76\u884c\u901a\u9053\u901a\u4fe1\u7cfb\u7edf\u7684\u5173\u952e\u6d4b\u8bd5\u3002\u5b83\u53ef\u7528\u4e8e\u4fe1\u53f7\u5b8c\u6574\u6027\u6d4b\u8bd5\u548c\u9a8c\u8bc1\uff08\u4e32\u6270\uff09\uff0c\u4e5f\u53ef\u7528\u4e8e\u5bf9 PAM-4 SERDES \u4e2d FIFO \u548c CDR \u7684\u6027\u80fd\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u3002<\/p><p>\u4e0d\u540c\u7684 skew \u7a0b\u5ea6\u4e5f\u53ef\u7528\u4e8e\u8c03\u67e5\u4fe1\u53f7\u5b8c\u6574\u6027\u548c\u4e32\u6270\u95ee\u9898\uff0c\u8fd9\u5728\u786c\u4ef6\u548c SI \u56e2\u961f\u4e2d\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u901a\u9053\u5b9a\u65f6\u53ef\u4ee5\u8c03\u6574\uff0c\u4ee5\u786e\u4fdd\u5e72\u6270\u6e90\u901a\u9053\u8f6c\u6362\u53d1\u751f\u5728\u53d7\u5e72\u6270\u5bf9\u8c61\u901a\u9053\u7684 PAM-4 \u773c\u56fe\u7684\u4e2d\u95f4\u3002<\/p><p>PAM-4 \u4fe1\u53f7\uff08\u56e0\u4e3a\u4fe1\u53f7\u4f59\u91cf\u8f83\u4f4e\uff09\u6bd4\u7ecf\u5178 NRZ \u66f4\u5bb9\u6613\u53d7\u5230\u4e32\u6270\u7684\u5f71\u54cd\u3002\u5728 QSFP-DD \u7684\u5bc6\u96c6\u8303\u56f4\u5185\uff08\u5c24\u5176\u662f\u5728\u4e3b\u673a\u8fde\u63a5\u5668\u5468\u56f4\uff09\uff0c\u9ad8\u901f PAM-4 \u901a\u9053\u7684\u5e03\u7ebf\u975e\u5e38\u63a5\u8fd1\uff0c\u5fc5\u987b\u5c0f\u5fc3\u5730\u907f\u514d\u51fa\u73b0\u4fe1\u53f7\u4e32\u6270\u95ee\u9898\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0cBER \u6d4b\u8bd5\u4eea\u4ee5\u56fa\u5b9a\u7684\u76f8\u4f4d\u8fd0\u884c\u5e73\u884c\u901a\u9053\uff0c\u56e0\u6b64 SI \u538b\u529b \u6d4b\u8bd5 \u4e0b\u53ef\u80fd\u4e0d\u4f1a\u51fa\u73b0\u201c\u6700\u574f\u5bf9\u9f50\u60c5\u51b5\u201d\u3002\u5229\u7528\u52a8\u6001 skew\uff0c\u5e72\u6270\u6e90\u901a\u9053\u53ef\u4ee5\u5728\u76f8\u5bf9\u76f8\u4f4d\u4e2d\u88ab\u626b\u63cf\uff0c\u4ee5\u5145\u5206\u9a8c\u8bc1\u95ee\u9898\u4e0d\u4f1a\u53d1\u751f\uff0c\u5373\u4f7f\u5728\u6700\u574f\u7684\u76f8\u79fb\u60c5\u51b5\u4e0b\u4e5f\u662f\u5982\u6b64\u3002\u6700\u7ec8\u7528\u6237\u53ea\u9700\u89c2\u5bdf\u7279\u5b9a\u76f8\u4f4d\u504f\u79fb\u5904\u662f\u5426\u51fa\u73b0\u8bef\u7801\uff08\u901a\u5e38\u662f\u5f53\u5e72\u6270\u6e90\u901a\u9053\u5728\u53d7\u5e72\u6270\u5bf9\u8c61\u201c\u773c\u56fe\u201d\u4e2d\u95f4\u6709\u7535\u5e73\u8f6c\u6362\u65f6\uff09\u3002<\/p><p>\u73b0\u4ee3 SERDES \u4f7f\u7528\u4e00\u7cfb\u5217 FIFO \u7f13\u51b2\u5668\u5bf9\u4fe1\u53f7\u91cd\u65b0\u8ba1\u65f6\u548c\u91cd\u65b0\u5bf9\u9f50\uff0c\u7136\u540e\u518d\u5728 IC \u7ed3\u6784\u5185\u8fdb\u4e00\u6b65\u5904\u7406\u3002\u91cd\u65b0\u5bf9\u9f50\u4f7f\u7528\u4e00\u7cfb\u5217 FIFO \u7f13\u51b2\u5668\uff0c\u8fd9\u4e9b\u7f13\u51b2\u5668\u4ece\u4e3b\u65f6\u949f\u6e90\uff08\u901a\u5e38\u662f\u901a\u8fc7 CDR \u7684\u4e3b\u901a\u9053\uff09\u6062\u590d\u65f6\u949f\u3002<\/p><p>\u5982\u679c\u7cfb\u7edf\u8bbe\u8ba1\u6216\u5b9e\u73b0\u65b9\u6cd5\u4e0d\u6b63\u786e\uff0c\u5219\u53ef\u80fd\u662f\u4e3b\u901a\u9053\uff08CDR \u53c2\u8003\u901a\u9053\uff09\u548c\u5176\u4ed6\u901a\u9053\u4e4b\u95f4\u7684\u76f8\u4f4d\u53d8\u5316\u548c\u53d8\u5316\u5bfc\u81f4 FIFO \u672a\u5bf9\u9f50\u751a\u81f3\u6ed1\u52a8\u3002\u8fd9\u5c06\u8868\u73b0\u4e3a\u4e00\u4e2a\u6bd4\u7279\u6ed1\u52a8\uff0cONT \u9ad8\u7ea7\u9519\u8bef\u5206\u6790\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u4e00\u4e2a\u6bd4\u7279\u6ed1\u52a8\u6765\u8ddf\u8e2a\uff0c\u800c\u4e0d\u662f\u50cf\u4f20\u7edf\u6d4b\u8bd5\u8bbe\u5907\u6240\u770b\u5230\u7684\u90a3\u6837\u4f5c\u4e3a\u4e00\u4e2a\u7a81\u53d1\u8bef\u7801\u6765\u8ddf\u8e2a\u3002\u5229\u7528\u52a8\u6001 skew \u5e94\u7528\u7a0b\u5e8f\uff0cONT \u53ef\u4ee5\u6709\u610f\u5bf9 SERDES \u4e2d CDR\/FIFO \u7684\u6027\u80fd\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\uff0c\u5e76\u8bd5\u56fe\u901a\u8fc7 skew\uff08\u8303\u56f4\u548c\u901f\u7387\uff09\u5f3a\u5236\u4ea7\u751f\u5931\u6548\u6a21\u5f0f\u3002\u8fd9\u4e0e ONT \u5148\u8fdb\u7684\u8bef\u7801\u5206\u6790\u76f8\u7ed3\u5408\uff0c\u4e3a SERDES \u6d4b\u8bd5\u63d0\u4f9b\u4e86\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u548c\u5b8c\u6574\u7684\u6d4b\u8bd5\u7cfb\u7edf\uff0c\u5e76\u53ef\u7528\u4e8e\u5feb\u901f\u89e3\u51b3 400GE \u94fe\u8def\u4e2d\u5076\u5c14\u5bfc\u81f4\u6bd4\u7279\u6ed1\u52a8\u7684\u6781\u5177\u6311\u6218\u6027\u7684\u95ee\u9898\u3002ONT PAM-4 \u52a8\u6001 skew \u53ef\u4ee5\u5f3a\u5236\u4ea7\u751f\u8fd9\u4e9b\u8bef\u7801\u6765\u5e2e\u52a9\u8bca\u65ad\u548c\u89e3\u51b3\u6839\u672c\u539f\u56e0\u3002<\/p><h2 class=\"wp-block-heading\">\u901a\u7528 QSFP-DD \u63a7\u5236\u753b\u9762<\/h2><p>\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u6a21\u5757\u7ba1\u7406\u5df2\u7ecf\u4ece\u975e\u5e38\u57fa\u672c\u7684\u57fa\u4e8e\u5bc4\u5b58\u5668\u7684\u7cfb\u7edf SFF 8636 \u53d1\u5c55\u5230 CMIS 4.0\uff0c\u8fd9\u662f\u4e00\u4e2a\u5168\u9762\u7684\u6709\u5b8c\u6574\u7684\u6a21 \u5757\u72b6\u6001\u7684\u7ba1\u7406\u7cfb\u7edf\uff0c\u65e8\u5728\u6ee1\u8db3 400GE \u53ca\u4ee5\u4e0a\u66f4\u590d\u6742\u6a21\u5757\u7684\u9700\u6c42\u3002<\/p><p>\u6a21\u5757\u901a\u8fc7 I\u00b2C \u63a7\u5236\u63a5\u53e3\u3001\u7535\u6e90\u548c\u63a7\u5236\u5f15\u811a\u4ee5\u53ca\u6570\u636e\u8def\u5f84\u4e4b\u95f4\u7684\u7d27\u5bc6\u4ea4\u4e92\u5bf9\u6a21\u5757\u7684\u7a33\u5065\u3001\u7a33\u5b9a\u8fd0\u884c\u81f3\u5173\u91cd\u8981\u3002\u6a21\u5757\u7684\u590d\u6742\u6027\u66f4\u9ad8\uff0c\u5c24\u5176\u662f\u5728\u6a21\u5757 DSP \u4e2d\u7684\u6570\u636e\u8def\u5f84\u5747\u8861\u65b9\u9762\uff0c\u9700\u8981\u5bf9\u4e3b\u673a\u548c\u6a21\u5757\u4e4b\u95f4\u7684\u63a7\u5236\u8bbe\u7f6e\u548c\u6267\u884c\u6709\u66f4\u5168\u9762\u7684\u4e86\u89e3\u3002\u5728 CMIS 4.0 \u4e0b\uff0c\u547d\u4ee4\u3001\u64cd\u4f5c\u548c\u65f6\u5e8f\u884c\u4e3a\u5fc5\u987b\u6309\u7167\u6b63\u786e\u987a\u5e8f\u7d27\u5bc6\u7f16\u6392\u3002\u5982\u679c\u4e0d\u5c0f\u5fc3\uff0c\u4e00\u4e2a\u6a21\u5757\u53ef\u80fd\u770b\u8d77\u6765\u5728\u4e00\u4e2a\u4e3b\u673a\u63d2\u69fd\u4e2d\u8fd0\u884c\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u53e6\u4e00\u4e2a\uff08\u5728\u547d\u4ee4\u3001\u7535\u6e90\u548c\u6570\u636e\u8def\u5f84\u5468\u56f4\u7684\u65f6\u5e8f\u4e0a\u6709\u7ec6\u5fae\u5dee\u522b\uff09\u4e0a\u9762\u53ef\u80fd\u8fd0\u884c\u4e0d\u7a33\u5b9a\u3002\u6216\u8005\u66f4\u7cdf\u7cd5\u7684\u662f\uff0c\u8bef\u7801\u7387\u589e\u52a0\uff0c\u51fa\u73b0\u7f55\u89c1\u4e14\u96be\u4ee5\u89e3\u51b3\u7684\u95ee\u9898\uff0c\u5f88\u53ef\u80fd\u662f\u6bd4\u7279\u6ed1\u52a8\u3002ONT \u7b49\u5de5\u5177\u96c6\u6210\u4e86 I\u00b2C \u4e0a\u7684 CMIS \u547d\u4ee4\uff0c\u4ee5\u53ca\u6a21\u5757\u7535\u6e90\u63a7\u5236\u548c\u6570\u636e\u8def\u5f84\u72b6\u6001\uff0c\u4e0d\u4ec5\u6709\u52a9\u4e8e\u8c03\u8bd5\u548c\u89e3\u51b3\u95ee\u9898\uff0c\u8fd8\u6709\u52a9\u4e8e\u5bf9\u6a21\u5757\u5728\u4e0d\u540c\u4e3b\u673a\u4e2d\u7684\u7a33\u5065\u6027\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"508\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09.jpg\" alt=\"\" class=\"wp-image-4856\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09-300x218.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09-600x435.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_09-64x46.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>\u4e0a\u9762\u7684\u5c4f\u5e55\u663e\u793a\u4e86\u5185\u5b58\u7b2c\u4e00\u9875\u7684\u5185\u5b58\u8f6c\u50a8\u3002\u8fd9\u53ef\u4ee5\u5feb\u901f\u68c0\u67e5 QSFP-DD EEPROM \u4e2d\u662f\u5426\u5b58\u50a8\u4e86\u6b63\u786e\u7684\u503c\u3002\u7a7a\u767d\u6216\u968f\u673a\u6570\u636e\u53ef\u80fd\u8868\u793a\u8bbe\u5907\u5c1a\u672a\u521d\u59cb\u5316\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"508\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10.jpg\" alt=\"\" class=\"wp-image-4857\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10.jpg 700w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10-300x218.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10-600x435.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_10-64x46.jpg 64w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/figure><\/div><p>\u6a21\u5757\u7ba1\u7406\u5e94\u7528\u4e2d\u7684\u4e00\u4e9b\u66f4\u9ad8\u7ea7\u7684\u5e94\u7528\u5141\u8bb8\u4ee5\u6e05\u6670\u548c\u660e\u786e\u7684\u65b9\u5f0f\u7cbe\u786e\u5730\u63a7\u5236\u6a21\u5757\u7684\u7535\u53e3\u53c2\u6570\u3002<\/p><h1 class=\"wp-block-heading\">\u603b\u7ed3<\/h1><p>QSFP-DD \u6a21\u5757\u662f\u7535\u5b50\u3001\u5149\u5b50\u3001\u673a\u68b0\u548c\u70ed\u5de5\u7a0b\u4e0e\u590d\u6742\u56fa\u4ef6\u7ed3\u5408\u5728\u4e00\u8d77\u7684\u5947\u8ff9\u3002\u5065\u5eb7\u7684\u591a\u4f9b\u5e94\u5546 QSFP-DD \u751f\u6001\u7cfb\u7edf\u5bf9\u4e8e 400G \u7f51\u7edc\u6280\u672f\u7684\u5e7f\u6cdb\u90e8\u7f72\u81f3\u5173\u91cd\u8981\u3002\u5b83\u4ee3\u8868\u4e86\u4f20\u7edf 100G \u6a21\u5757\u6280\u672f\u7684\u53d1\u5c55\u548c\u9769\u547d\uff0c\u540c\u65f6\u4e5f\u5e26\u6765\u4e86\u65b0\u7684\u6311\u6218\uff0c\u5305\u62ec PAM-4 \u4fe1\u53f7\uff08\u7535\u6c14\u548c\u5149\u5b66\uff09\u3001FEC \u7528\u4e8e\u94fe\u8def\u8bef\u7801\u63a7\u5236\u4ee5\u53ca CMIS 4.0 \u65b0\u7684\u590d\u6742\u6027\u3002<\/p><p>\u8fd9\u4e9b\u6311\u6218\u4e4b\u6240\u4ee5\u66f4\u5927\uff0c\u662f\u56e0\u4e3a\u8d85\u5927\u89c4\u6a21\u7528\u6237\u7684\u89c4\u6a21\u548c\u90e8\u7f72\u9700\u6c42\u63a8\u52a8\u4e86\u4ef7\u683c\u9884\u671f\u7684\u53d8\u5316\u3002\u751f\u4ea7\u5fc5\u987b\u6ee1\u8db3\u4ea7\u91cf\u548c\u541e\u5410\u91cf\u8981\u6c42\uff0c\u4ee5\u8fbe\u5230\u4ef7\u683c\u9884\u671f\uff0c\u540c\u65f6\u8fd8\u5fc5\u987b\u5177\u5907\u8986\u76d6\u548c\u5206\u6790\u80fd\u529b\uff0c\u4ee5\u5e94\u5bf9 PAM-4 \u7684\u65b0\u6311\u6218\u3002<\/p><p>VIAVI ONT \u7cfb\u5217\u5bf9\u6a21\u5757\u9a8c\u8bc1\u548c\u6d4b\u8bd5\u5e94\u7528\u5df2\u7ecf\u6709\u4e86\u4e8c\u5341\u591a\u5e74\u6df1\u5165\u900f\u5f7b\u7684\u7814\u7a76\u3002\u5b83\u901a\u8fc7\u5148\u8fdb\u7684\u8bef\u7801\u5206\u6790\u548c\u52a8\u6001 skew \u7b49\u7ecf\u5178 100G \u5e94\u7528\u4ee5\u53ca CMIS 4.0 \u8c03\u8bd5\u548c PAM-4 \u7801\u5143\u5206\u6790\u7b49 VIAVI \u6700\u65b0\u521b\u65b0\u6210\u679c\uff0c\u8fc5\u901f\u6210\u4e3a 400G \u5149\u5b66\u6a21\u5757\u548c\u5668\u4ef6\u5f00\u53d1\u3001\u9a8c\u8bc1\u548c\u90e8\u7f72\u7684\u6807\u6746\u3002<\/p><p>\u5728\u5bfb\u6c42\u5168\u9762\u8986\u76d6 400G QSFP-DD \u7684\u6240\u6709\u6311\u6218\u65f6\uff0c\u65e0\u8bba\u662f\u4f20\u7edf\u5ba2\u6237\u4fa7\u63a5\u53e3\u7684\u9700\u6c42\uff0c\u8fd8\u662f\u65b0\u5174\u7684\u65b0\u578b\u76f8\u5e72\u63a5\u53e3\u7684\u9700\u6c42\uff0cONT \u90fd\u6709\u5408\u9002\u7684\u5e94\u7528\u3002 PAM-4 \u5bf9\u4e8e 50Gbps \u4fe1\u9053\u548c\u5355\u6ce2\u957f 100G \u4ee5\u592a\u7f51\u4ecd\u7136\u662f\u4e00\u4e2a\u65b0\u7684\u4fe1\u53f7\u3002\u5bf9\u4e8e\u6210\u719f\u548c\u4f4e\u6210\u672c\u7684 10Gbps \u548c 25Gbps NRZ\u4fe1\u9053\u7684\u4f7f\u7528\u80af\u5b9a\u4e0d\u4f1a\u5728\u4e00\u591c\u4e4b\u95f4\u6d88\u5931\u3002\u4f46\u662f\uff0cPAM-4 \u6280\u672f\uff08\u6a21\u62df\u548c\u6570\u5b57\u5b9e\u4f8b\u5316\uff09\u7684\u6210\u719f\u4f7f\u8fd9\u79cd\u65b0\u7684\u4fe1\u53f7\u65b9\u6cd5\u8d70\u5728\u4e86\u6700\u65b0\u7684\u9ad8\u901f\u4ee5\u592a\u7f51\u5b9e\u65bd\u7684\u524d\u6cbf\u3002\u4e8b\u5b9e\u4e0a\uff0c\u7535\u6c14\u548c\u7535\u5b50\u5de5\u7a0b\u5e08\u534f\u4f1a (IEEE) \u5df2\u7ecf\u6279\u51c6 PAM-4 \u4f5c\u4e3a\u7efc\u5408 802.3bs\u3001802.3cd \u548c 802.3ck \u6807\u51c6\u4e2d\u6240\u6709 50Gbit\u3001100Gbit\u3001200Gbit \u548c 400Gbit \u4ee5\u592a\u7f51\u6807\u51c6\u7684\u9996\u9009\u4fe1\u53f7\u3002\u6b64\u5916\uff0c\u201c\u5355\u6ce2 100G\u201d\u7ec4\u7b49 MSA \u6b63\u5728\u7ec4\u7ec7\u8d77\u6765\uff0c\u4e3a\u6574\u4e2a\u6570\u636e\u4e2d\u5fc3\u751f\u6001\u7cfb\u7edf\u586b\u5145 PAM-4 \u4fe1\u53f7\u7684\u542b\u4e49\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>QSFP-DD \u5149\u6a21\u5757\u662f 400G \u5ba2\u6237\u4fa7\u63a5\u53e3\u7684\u4e3b\u6d41\u5c01\u88c5\u89c4\u683c\u3002\u672c\u767d\u76ae\u4e66\u4e3a\u6a21\u5757\u5f00\u53d1\u4eba\u5458\u3001\u7f51\u7edc\u5143\u4ef6\u5236\u9020\u5546\u548c\u6700\u7ec8\u7528\u6237\u5206\u4eab\u4e86 QSFP-DD \u6a21\u5757\u6210\u529f\u6d4b\u8bd5\u3001\u6545\u969c\u6392\u67e5\u548c\u9a8c\u8bc1\u7684\u5173\u952e\u56e0\u7d20\u3002<br \/>\n\u5ba2\u6237\u4fa7\u63a5\u53e3\u901f\u5ea6\u7a33\u6b65\u589e\u957f\uff0c\u5178\u578b\u7684\u901f\u7387\u6bcf\u5341\u5e74\u81f3\u5c11\u589e\u52a0\u5341\u500d\u3002100GE \u5df2\u7ecf\u901a\u8fc7 QSFP28 \u63a5\u53e3\u5e7f\u6cdb\u90e8\u7f72\uff0c\u6211\u4eec\u6b63\u5904\u4e8e 400G \u90e8\u7f72\u7684\u65e9\u671f\u9636\u6bb5\u3002\u4f5c\u4e3a 2017 \u5e74 12 \u6708\u6b63\u5f0f\u6807\u51c6\u5316\u7684 802.3.bs \u7684\u4e00\u90e8\u5206\uff0cIEEE \u5f00\u53d1\u4e86 400G \u4ee5\u592a\u7f51\u5ba2\u6237\u4fa7\u63a5\u53e3\u6807\u51c6\u3002\u65e9\u671f\u91c7\u7528\u8005\u4f7f\u7528\u7684\u662f CFP8\u5c01\u88c5\u89c4\u683c\uff0c\u4f46\u66f4\u5e7f\u6cdb\u7684\u5e02\u573a\u5173\u6ce8\u7684\u662f QSFP-DD\uff0c\u5b83\u5141\u8bb8\u4e0e\u5e7f\u6cdb\u91c7\u7528\u7684 QSFP28 \u5b9e\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5411\u540e\u517c\u5bb9\u3002<\/p>\n","protected":false},"author":2,"featured_media":4858,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,32,108,24],"tags":[99,373],"class_list":["post-4847","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-datacenter","category-iot","category-electronics","category-solutions","tag-400g","tag-qsfp-dd"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.comtest.com.cn\/?p=4847\" \/>\r\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280\" \/>\r\n<meta property=\"og:description\" content=\"QSFP-DD \u5149\u6a21\u5757\u662f 400G \u5ba2\u6237\u4fa7\u63a5\u53e3\u7684\u4e3b\u6d41\u5c01\u88c5\u89c4\u683c\u3002\u672c\u767d\u76ae\u4e66\u4e3a\u6a21\u5757\u5f00\u53d1\u4eba\u5458\u3001\u7f51\u7edc\u5143\u4ef6\u5236\u9020\u5546\u548c\u6700\u7ec8\u7528\u6237\u5206\u4eab\u4e86 QSFP-DD \u6a21\u5757\u6210\u529f\u6d4b\u8bd5\u3001\u6545\u969c\u6392\u67e5\u548c\u9a8c\u8bc1\u7684\u5173\u952e\u56e0\u7d20\u3002 \u5ba2\u6237\u4fa7\u63a5\u53e3\u901f\u5ea6\u7a33\u6b65\u589e\u957f\uff0c\u5178\u578b\u7684\u901f\u7387\u6bcf\u5341\u5e74\u81f3\u5c11\u589e\u52a0\u5341\u500d\u3002100GE \u5df2\u7ecf\u901a\u8fc7 QSFP28 \u63a5\u53e3\u5e7f\u6cdb\u90e8\u7f72\uff0c\u6211\u4eec\u6b63\u5904\u4e8e 400G \u90e8\u7f72\u7684\u65e9\u671f\u9636\u6bb5\u3002\u4f5c\u4e3a 2017 \u5e74 12 \u6708\u6b63\u5f0f\u6807\u51c6\u5316\u7684 802.3.bs \u7684\u4e00\u90e8\u5206\uff0cIEEE \u5f00\u53d1\u4e86 400G \u4ee5\u592a\u7f51\u5ba2\u6237\u4fa7\u63a5\u53e3\u6807\u51c6\u3002\u65e9\u671f\u91c7\u7528\u8005\u4f7f\u7528\u7684\u662f CFP8\u5c01\u88c5\u89c4\u683c\uff0c\u4f46\u66f4\u5e7f\u6cdb\u7684\u5e02\u573a\u5173\u6ce8\u7684\u662f QSFP-DD\uff0c\u5b83\u5141\u8bb8\u4e0e\u5e7f\u6cdb\u91c7\u7528\u7684 QSFP28 \u5b9e\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5411\u540e\u517c\u5bb9\u3002\" \/>\r\n<meta property=\"og:url\" content=\"http:\/\/www.comtest.com.cn\/?p=4847\" \/>\r\n<meta property=\"og:site_name\" content=\"\u901a\u6d4b\u79d1\u6280\" \/>\r\n<meta property=\"article:published_time\" content=\"2021-08-27T07:12:14+00:00\" \/>\r\n<meta property=\"article:modified_time\" content=\"2021-08-27T07:12:18+00:00\" \/>\r\n<meta property=\"og:image\" content=\"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg\" \/>\r\n\t<meta property=\"og:image:width\" content=\"960\" \/>\r\n\t<meta property=\"og:image:height\" content=\"540\" \/>\r\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\r\n<meta name=\"author\" content=\"wanlipeng\" \/>\r\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\r\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"wanlipeng\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 \u5206\" \/>\r\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#article\",\"isPartOf\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847\"},\"author\":{\"name\":\"wanlipeng\",\"@id\":\"http:\/\/www.comtest.com.cn\/#\/schema\/person\/30d7eaf11395073dd3c5b5f2e57e6ebc\"},\"headline\":\"QSFP-DD \u6a21\u5757\u6d4b\u8bd5\",\"datePublished\":\"2021-08-27T07:12:14+00:00\",\"dateModified\":\"2021-08-27T07:12:18+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847\"},\"wordCount\":281,\"publisher\":{\"@id\":\"http:\/\/www.comtest.com.cn\/#organization\"},\"image\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg\",\"keywords\":[\"400G\",\"QSFP-DD\"],\"articleSection\":[\"\u6570\u636e\u4e2d\u5fc3\",\"\u7269\u8054\u7f51\",\"\u7535\u5b50\",\"\u89e3\u51b3\u65b9\u6848\"],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847\",\"url\":\"http:\/\/www.comtest.com.cn\/?p=4847\",\"name\":\"QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280\",\"isPartOf\":{\"@id\":\"http:\/\/www.comtest.com.cn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage\"},\"image\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg\",\"datePublished\":\"2021-08-27T07:12:14+00:00\",\"dateModified\":\"2021-08-27T07:12:18+00:00\",\"breadcrumb\":{\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/www.comtest.com.cn\/?p=4847\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage\",\"url\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg\",\"contentUrl\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg\",\"width\":960,\"height\":540},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/www.comtest.com.cn\/?p=4847#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"http:\/\/www.comtest.cn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"QSFP-DD \u6a21\u5757\u6d4b\u8bd5\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.comtest.com.cn\/#website\",\"url\":\"http:\/\/www.comtest.com.cn\/\",\"name\":\"\u901a\u6d4b\u79d1\u6280\",\"description\":\"\u4e13\u4e1a\u6d4b\u8bd5\u7cfb\u7edf\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\u5546\",\"publisher\":{\"@id\":\"http:\/\/www.comtest.com.cn\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.comtest.com.cn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Organization\",\"@id\":\"http:\/\/www.comtest.com.cn\/#organization\",\"name\":\"\u901a\u6d4b\u79d1\u6280\",\"url\":\"http:\/\/www.comtest.com.cn\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"http:\/\/www.comtest.com.cn\/#\/schema\/logo\/image\/\",\"url\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2023\/04\/COMTESTNoRlogo-2.png\",\"contentUrl\":\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2023\/04\/COMTESTNoRlogo-2.png\",\"width\":472,\"height\":165,\"caption\":\"\u901a\u6d4b\u79d1\u6280\"},\"image\":{\"@id\":\"http:\/\/www.comtest.com.cn\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"http:\/\/www.comtest.com.cn\/#\/schema\/person\/30d7eaf11395073dd3c5b5f2e57e6ebc\",\"name\":\"wanlipeng\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"http:\/\/www.comtest.com.cn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/9ce956eb0298d1f87516e5a92d3450d0?s=96&d=mm&r=x\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/9ce956eb0298d1f87516e5a92d3450d0?s=96&d=mm&r=x\",\"caption\":\"wanlipeng\"}}]}<\/script>\r\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/www.comtest.com.cn\/?p=4847","og_locale":"zh_CN","og_type":"article","og_title":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280","og_description":"QSFP-DD \u5149\u6a21\u5757\u662f 400G \u5ba2\u6237\u4fa7\u63a5\u53e3\u7684\u4e3b\u6d41\u5c01\u88c5\u89c4\u683c\u3002\u672c\u767d\u76ae\u4e66\u4e3a\u6a21\u5757\u5f00\u53d1\u4eba\u5458\u3001\u7f51\u7edc\u5143\u4ef6\u5236\u9020\u5546\u548c\u6700\u7ec8\u7528\u6237\u5206\u4eab\u4e86 QSFP-DD \u6a21\u5757\u6210\u529f\u6d4b\u8bd5\u3001\u6545\u969c\u6392\u67e5\u548c\u9a8c\u8bc1\u7684\u5173\u952e\u56e0\u7d20\u3002 \u5ba2\u6237\u4fa7\u63a5\u53e3\u901f\u5ea6\u7a33\u6b65\u589e\u957f\uff0c\u5178\u578b\u7684\u901f\u7387\u6bcf\u5341\u5e74\u81f3\u5c11\u589e\u52a0\u5341\u500d\u3002100GE \u5df2\u7ecf\u901a\u8fc7 QSFP28 \u63a5\u53e3\u5e7f\u6cdb\u90e8\u7f72\uff0c\u6211\u4eec\u6b63\u5904\u4e8e 400G \u90e8\u7f72\u7684\u65e9\u671f\u9636\u6bb5\u3002\u4f5c\u4e3a 2017 \u5e74 12 \u6708\u6b63\u5f0f\u6807\u51c6\u5316\u7684 802.3.bs \u7684\u4e00\u90e8\u5206\uff0cIEEE \u5f00\u53d1\u4e86 400G \u4ee5\u592a\u7f51\u5ba2\u6237\u4fa7\u63a5\u53e3\u6807\u51c6\u3002\u65e9\u671f\u91c7\u7528\u8005\u4f7f\u7528\u7684\u662f CFP8\u5c01\u88c5\u89c4\u683c\uff0c\u4f46\u66f4\u5e7f\u6cdb\u7684\u5e02\u573a\u5173\u6ce8\u7684\u662f QSFP-DD\uff0c\u5b83\u5141\u8bb8\u4e0e\u5e7f\u6cdb\u91c7\u7528\u7684 QSFP28 \u5b9e\u73b0\u4e00\u5b9a\u7a0b\u5ea6\u7684\u5411\u540e\u517c\u5bb9\u3002","og_url":"http:\/\/www.comtest.com.cn\/?p=4847","og_site_name":"\u901a\u6d4b\u79d1\u6280","article_published_time":"2021-08-27T07:12:14+00:00","article_modified_time":"2021-08-27T07:12:18+00:00","og_image":[{"width":960,"height":540,"url":"http:\/\/www.comtest.com.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg","type":"image\/jpeg"}],"author":"wanlipeng","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"wanlipeng","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"5 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"http:\/\/www.comtest.com.cn\/?p=4847#article","isPartOf":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847"},"author":{"name":"wanlipeng","@id":"http:\/\/www.comtest.com.cn\/#\/schema\/person\/30d7eaf11395073dd3c5b5f2e57e6ebc"},"headline":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5","datePublished":"2021-08-27T07:12:14+00:00","dateModified":"2021-08-27T07:12:18+00:00","mainEntityOfPage":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847"},"wordCount":281,"publisher":{"@id":"http:\/\/www.comtest.com.cn\/#organization"},"image":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage"},"thumbnailUrl":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg","keywords":["400G","QSFP-DD"],"articleSection":["\u6570\u636e\u4e2d\u5fc3","\u7269\u8054\u7f51","\u7535\u5b50","\u89e3\u51b3\u65b9\u6848"],"inLanguage":"zh-Hans"},{"@type":"WebPage","@id":"http:\/\/www.comtest.com.cn\/?p=4847","url":"http:\/\/www.comtest.com.cn\/?p=4847","name":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5 - \u901a\u6d4b\u79d1\u6280","isPartOf":{"@id":"http:\/\/www.comtest.com.cn\/#website"},"primaryImageOfPage":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage"},"image":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage"},"thumbnailUrl":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg","datePublished":"2021-08-27T07:12:14+00:00","dateModified":"2021-08-27T07:12:18+00:00","breadcrumb":{"@id":"http:\/\/www.comtest.com.cn\/?p=4847#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["http:\/\/www.comtest.com.cn\/?p=4847"]}]},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"http:\/\/www.comtest.com.cn\/?p=4847#primaryimage","url":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg","contentUrl":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/08\/QSFP-DD_sol.jpg","width":960,"height":540},{"@type":"BreadcrumbList","@id":"http:\/\/www.comtest.com.cn\/?p=4847#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"http:\/\/www.comtest.cn\/"},{"@type":"ListItem","position":2,"name":"QSFP-DD \u6a21\u5757\u6d4b\u8bd5"}]},{"@type":"WebSite","@id":"http:\/\/www.comtest.com.cn\/#website","url":"http:\/\/www.comtest.com.cn\/","name":"\u901a\u6d4b\u79d1\u6280","description":"\u4e13\u4e1a\u6d4b\u8bd5\u7cfb\u7edf\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\u5546","publisher":{"@id":"http:\/\/www.comtest.com.cn\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"http:\/\/www.comtest.com.cn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-Hans"},{"@type":"Organization","@id":"http:\/\/www.comtest.com.cn\/#organization","name":"\u901a\u6d4b\u79d1\u6280","url":"http:\/\/www.comtest.com.cn\/","logo":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"http:\/\/www.comtest.com.cn\/#\/schema\/logo\/image\/","url":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2023\/04\/COMTESTNoRlogo-2.png","contentUrl":"http:\/\/www.comtest.cn\/wp-content\/uploads\/2023\/04\/COMTESTNoRlogo-2.png","width":472,"height":165,"caption":"\u901a\u6d4b\u79d1\u6280"},"image":{"@id":"http:\/\/www.comtest.com.cn\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"http:\/\/www.comtest.com.cn\/#\/schema\/person\/30d7eaf11395073dd3c5b5f2e57e6ebc","name":"wanlipeng","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"http:\/\/www.comtest.com.cn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/9ce956eb0298d1f87516e5a92d3450d0?s=96&d=mm&r=x","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9ce956eb0298d1f87516e5a92d3450d0?s=96&d=mm&r=x","caption":"wanlipeng"}}]}},"_links":{"self":[{"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/posts\/4847","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4847"}],"version-history":[{"count":1,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/posts\/4847\/revisions"}],"predecessor-version":[{"id":4859,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/posts\/4847\/revisions\/4859"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=\/wp\/v2\/media\/4858"}],"wp:attachment":[{"href":"http:\/\/www.comtest.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4847"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4847"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.comtest.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4847"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}