{"id":3973,"date":"2021-05-21T10:43:57","date_gmt":"2021-05-21T02:43:57","guid":{"rendered":"http:\/\/www.comtest.cn\/?p=3973"},"modified":"2021-06-29T09:18:53","modified_gmt":"2021-06-29T01:18:53","slug":"%e4%bd%bf%e7%94%a8-viavi-ont-%e6%b5%8b%e8%af%95%e5%92%8c%e9%aa%8c%e8%af%81fec-%e5%ae%9e%e6%96%bd","status":"publish","type":"post","link":"http:\/\/www.comtest.cn\/?p=3973","title":{"rendered":"\u4f7f\u7528 VIAVI ONT \u6d4b\u8bd5\u548c\u9a8c\u8bc1FEC \u5b9e\u65bd"},"content":{"rendered":"<p>\u672c\u767d\u76ae\u4e66\u8bf4\u660e\u4e86\u5982\u4f55\u4f7f\u7528 VIAVI ONT \u7cfb\u5217\u63d0\u4f9b\u7684\u4e00\u7cfb\u5217\u5e94\u7528\u7a0b\u5e8f\u6765\u5f00\u53d1\u3001\u6d4b\u8bd5\u548c\u9a8c\u8bc1 400G \u53ca\u76f8\u5173\u4ee5\u592a\u7f51\u6280\u672f\u4e2d\u4f7f\u7528\u7684 FEC IP\u3002<\/p><p>\u73b0\u4ee3\u901a\u4fe1\u7cfb\u7edf\u5e7f\u6cdb\u4f7f\u7528\u524d\u5411\u7ea0\u9519 (FEC) \u6280\u672f\u6765\u786e\u4fdd\u53ef\u9760\u548c\u9ad8\u6027\u80fd\u7684\u901a\u4fe1\u94fe\u8def\u3002\u4ece\u8d85\u957f\u8ddd\u79bb\u6d77\u5e95\u7535\u7f06\u5230\u80cc\u677f\u4e0a\u7684\u77ed\u8df3\u7ebf \u2013 FEC \u53ef\u7528\u4e8e\u63d0\u9ad8\u6574\u4f53\u6027\u80fd\u3002\u6700\u8fd1\u51fa\u73b0\u7684 400G \u4ee5\u592a\u7f51\u5bfc\u81f4\u4e86\u5177\u6709\u5f3a\u5236\u6027 FEC \u7684\u4ee5\u592a\u7f51\u63a5\u53e3\u7684\u5e7f\u6cdb\u90e8\u7f72\u3002\u4e3a\u4e86\u5efa\u7acb\u4e00\u4e2a\u5f00\u653e\u3001 \u591a\u4f9b\u5e94\u5546\u3001\u5373\u63d2\u5373\u7528\u7684\u751f\u6001\u7cfb\u7edf\uff0c\u9700\u8981\u5bf9\u6b64 FEC \u6a21\u5757\u8fdb\u884c\u5f00\u53d1\u3001\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u3002FEC \u5df2\u88ab\u5e7f\u6cdb\u90e8\u7f72\u5728 OTN\uff08\u5149\u4f20\u8f93\u7f51\u7edc\uff09 \u6280\u672f\u4e2d\uff0cVIAVI \u5728\u6d4b\u8bd5\u3001FEC \u9a8c\u8bc1\u548c\u6545\u969c\u6392\u67e5\u65b9\u9762\u62e5\u6709\u4e30\u5bcc\u7684\u7ecf\u9a8c\uff0c\u5b83\u901a\u8fc7\u65b0\u7684 400G \u4ee5\u592a\u7f51\u6269\u5c55\u4e86\u8fd9\u4e9b\u7ecf\u9a8c\uff0c\u4ee5\u6ee1\u8db3\u5f53\u4eca\u7684\u7279\u5b9a\u9700\u6c42\u548c\u6311\u6218\u3002<\/p><h1 class=\"wp-block-heading\">\u4ec0\u4e48\u662f FEC\uff1f<\/h1><p>\u5728\u771f\u5b9e\u7684\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u76ee\u6807\u62a5\u6587\u88ab\u7f16\u7801\u4e3a\u591a\u4e2a\u7801\u5143\uff08\u5728\u6700\u7b80\u5355\u7684\u60c5\u51b5\u4e0b\u662f\u4e8c\u8fdb\u5236\u6bd4\u7279\uff09\u3002\u7136\u540e\uff0c\u62a5\u6587\u901a\u8fc7\u901a\u4fe1\u4fe1\u9053\u53d1\u9001\uff0c\u53d7\u5230\u566a\u58f0\u3001\u635f\u574f\u3001\u5931\u771f\u548c\u5176\u4ed6\u56e0\u7d20\u7684\u5f71\u54cd\u3002\u9884\u671f\u4fe1\u9053\u4e2d\u7684\u566a\u58f0\u4f1a\u7834\u574f\u968f\u673a\u6570\u91cf\u7684\u4f20\u8f93\u6bd4\u7279\uff0c\u56e0\u6b64\u76ee\u6807\u62a5\u6587\u4f1a\u88ab\u7834\u574f\uff0c\u5c3d\u7ba1\u53ef\u4ee5\u4f7f\u7528\u7b80\u5355\u7684\u6280\u672f\uff08\u5982\u5947\u5076\u6821\u9a8c\u6216\u6821\u9a8c\u548c\uff09\u6765\u9a8c\u8bc1\u62a5\u6587\uff0c\u4f46\u8fd9\u901a\u5e38\u610f\u5473\u7740\u5fc5\u987b\u91cd\u65b0\u4f20\u8f93\u62a5\u6587\u3002\u8fd9\u5bf9\u4e8e\u73b0\u4ee3\u901a\u4fe1\u7cfb\u7edf\u6765\u8bf4\u663e\u7136\u662f\u4f4e\u6548\u7684\uff0c\u56e0\u4e3a\u5728\u4efb\u4f55\u5b9e\u9645\u94fe\u8def\u4e2d\uff0c\u9519\u8bef\u90fd\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5305\u7684\u6301\u7eed\u91cd\u4f20\u3002<\/p><p>\u5f53\u4f7f\u7528 FEC \u65f6\uff0c\u76ee\u6807\u62a5\u6587\u5728\u53d1\u9001\u7aef\uff08\u901a\u5e38\u4ee5\u56fa\u5b9a\u7684\u5757\u5927\u5c0f\uff09\u7f16\u7801\uff0c\u5176\u4e2d\u6839\u636e\u6240\u9009\u7684 FEC \u7b97\u6cd5\u6dfb\u52a0\u9644\u52a0\u6bd4\u7279\u3002\u7136\u540e\uff0c\u8be5\u9644\u52a0\u4fe1\u606f\u4e0e\u76ee\u6807\u62a5\u6587\u4e00\u8d77\u5728\u566a\u58f0\u4fe1\u9053\u4e0a\u53d1\u9001\u3002\u548c\u4ee5\u524d\u4e00\u6837\uff0c\u53d1\u9001\u7684\u82e5\u5e72\u6bd4\u7279\u53ef\u80fd\u4f1a\u88ab\u7834\u574f\uff0c\u4f46\u662f\u63a5\u6536\u5668 FEC \u7b97\u6cd5\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528\u6dfb\u52a0\u7684\u6bd4\u7279\u6765\u5141\u8bb8\u5b83\u68c0\u6d4b\u548c\u7ea0\u6b63\u88ab\u7834\u574f\u7684\u6bd4\u7279\u3002\u6839\u636e\u901a\u4fe1\u4fe1\u9053\u7684\u7279\u6027\u548c\u6240\u4f7f\u7528\u7684 FEC \u7b97\u6cd5\uff0c\u73b0\u4ee3\u7684 FEC \u7b97\u6cd5\u80fd\u591f\u4ee5\u4e00\u4e9b\u989d\u5916\u7684\u6570\u636e\u201c\u5f00\u9500\u201d\u4e3a\u4ee3\u4ef7\uff0c\u6709\u6548\u5730\u4f7f\u6709\u566a\u58f0\u7684\u4fe1\u9053\u770b\u8d77\u6765\u662f\u65e0\u5dee\u9519\u7684\u3002<\/p><p>FEC \u7b97\u6cd5\u7684\u6027\u80fd\u53ef\u4ee5\u7528\u591a\u79cd\u65b9\u5f0f\u6765\u8868\u793a\uff0c\u4e00\u79cd\u5e38\u89c1\u7684\u65b9\u6cd5\u662f\u7f16\u7801\u589e\u76ca\u3002\u7531\u4e8e\u6570\u636e\u4ee5\u7279\u5b9a\u7684 FEC \u65b9\u5f0f\u4f20\u8f93\uff0c\u8fd9\u53ef\u4ee5\u6709\u6548\u6539\u5584\u4fe1\u9053\u4fe1\u566a\u6bd4 (SNR)\u3002IEEE \u5728\u9009\u62e9\u7528\u4e8e 400G \u4ee5\u592a\u7f51 (802.3bs) \u7684 FEC \u65f6\u8003\u8651\u4e86\u8bb8\u591a\u56e0\u7d20\uff0c\u5305\u62ec\u5b9e\u73b0\u590d\u6742\u5ea6\u3001\u5ef6\u8fdf\u3001\u6027\u80fd\u3001\u6240\u9700\u529f\u7387\u548c IC \u9762\u79ef\u3002\u51b3\u5b9a\u5728\u57fa\u4e8e\u91cc\u5fb7-\u6240\u7f57\u95e8\u7684 FEC \u4e0a\u4f7f\u7528\u4f5c\u7528\u4e8e 514 \u4e2a\u7801\u5143\u7801\u5b57\u7684 FEC\uff0c\u6bcf\u4e2a\u7801\u5143\u7531 10 \u4e2a\u6bd4\u7279\u7ec4\u6210\uff0c\u901a\u8fc7\u6dfb\u52a0 FEC \u7f16\u7801\u6269\u5c55\u5230 544 \u4e2a\u7801\u5143\u3002\u8fd9\u5141\u8bb8\u4ee3\u7801\u68c0\u6d4b\u548c\u7ea0\u6b63\u6bcf\u4e2a\u7801\u5b57\u5757\u4e2d\u7684\u6700\u591a 16 \u4e2a\u9519\u8bef\u7801\u5143\uff08FEC \u53ef\u4ee5\u68c0\u6d4b\u4f46\u4e0d\u80fd\u7ea0\u6b63\u8d85\u8fc7 16 \u4e2a\u9519\u8bef\u7801\u5143\uff0c\u5e76\u4e14\u53ef\u4ee5\u5c06\u7801\u5b57\u6807\u8bb0\u4e3a\u635f\u574f\uff09\u3002<\/p><p>IEEE 802.3 \u6807\u51c6\u6587\u6863\u662f\u4ee5\u592a\u7f51 FEC \u7684\u53c2\u8003\uff0c\u867d\u7136\u5b83\u6ca1\u6709\u5b9a\u4e49\u5b9e\u73b0\u65b9\u6cd5\uff0c\u4f46\u5b83\u5236\u5b9a\u4e86\u6807\u51c6\u548c\u5b9a\u4e49\u3002<\/p><p>VIAVI ONT \u7684\u5c4f\u5e55\u622a\u56fe\uff08\u56fe 1\uff09\u663e\u793a\u4e86 FEC \u89e3\u7801\u5668\u5982\u4f55\u5339\u914d\u4fe1\u53f7\u6d41\u300216 \u4e2a\u903b\u8f91\u901a\u9053\uff08\u53ef\u4ee5\u7f16\u7801\u4e3a 4 \u4e2a PAM-4 \u5149\u901a\u9053\uff08\u6bcf\u4e2a\u901a\u9053 100G \u6216 56 Gbd\uff09\u548c\/\u6216 8 \u4e2a 28 Gbd \u7684 PAM4 \u7535\u901a\u9053\uff09\u8fdb\u5165 PCS \u903b\u8f91\uff0c\u5176\u4e2d\u6bcf\u4e2a\u901a\u9053\u90fd\u6709\u5176\u552f\u4e00\u7684\u5bf9\u51c6\u6807\u8bb0 (AM) \u53ef\u88ab\u8bc6\u522b\u548c\u8ddf\u8e2a\u3002\u8be5\u903b\u8f91\u786e\u5b9a\u6bcf\u4e2a\u901a\u9053\u662f\u5426\u88ab\u6b63\u786e\u8bc6\u522b\u5e76\u4e14\u5728 skew \u7684\u9650\u5236\u8303\u56f4\u5185\uff0c\u7136\u540e\u5c06\u5176\u4f20\u9012\u5230\u5bf9\u901a\u9053\u91cd\u65b0\u6392\u5e8f\u7684\u5757\u4e0a\uff08\u5b83\u4eec\u53ef\u80fd\u5728\u4f20\u8f93\u4e2d\u4f7f\u7528\u7684\u591a\u8def\u590d\u7528\u548c\u89e3\u590d\u7528\u8fc7\u7a0b\u671f\u95f4\u5df2\u7ecf\u88ab\u91cd\u65b0\u6392\u5e8f\u548c\u5f15\u5165\u4e86 skew\uff09\uff0c\u7136\u540e\u5bf9\u5176\u8fdb\u884c\u53bb skew \u4ee5\u5c06\u5b83\u4eec\u91cd\u65b0\u5bf9\u9f50\u6210\u7801\u5b57\u3002\u7136\u540e\u5c06\u7801\u5b57\u5757\u4f20\u9012\u5230\u4ea4\u7ec7\u7684 FEC \u5757\u4e2d\uff0c\u8be5\u4ea4\u7ec7\u7684 FEC \u5757\u68c0\u6d4b\u5e76\u7ea0\u6b63\u5728\u4f20\u8f93\u671f\u95f4\u53d1\u751f\u7684\u4efb\u4f55\u9519\u8bef\uff0c\u5c06\u7531\u4e8e\u8fc7\u591a\u9519\u8bef\u800c\u4e0d\u80fd\u7ea0\u6b63\u7684\u4efb\u4f55\u7801\u5b57\u6807\u8bb0\u4e3a\u4e0d\u53ef\u7ea0\u6b63\u3002\u7136\u540e\u7801\u5b57\u88ab\u8f6c\u7801\u5e76\u4f20\u9012\u5230\u534f\u8c03\u5c42\u8fdb\u884c\u8fdb\u4e00\u6b65 (MAC) \u5904\u7406\u3002<\/p><p>\u5728\u6bcf\u4e2a\u9636\u6bb5\uff0c\u53ef\u4ee5\u5224\u65ad\u5404\u79cd\u8b66\u62a5\u548c\u9519\u8bef\uff0c\u4ee5\u8ddf\u8e2a\u72b6\u6001\u673a\u548c\u6570\u636e\u6d41\u3002FEC \u89e3\u7801\u5668\u662f\u63a5\u6536\u5668\u903b\u8f91\u4e2d\u6700\u590d\u6742\u7684\u90e8\u5206\u4e4b\u4e00\uff0c\u8be5\u903b\u8f91\u5757\u7684\u6b63\u786e\u529f\u80fd\u548c\u6027\u80fd\u662f\u4efb\u4f55 400G \u7cfb\u7edf\u5f00\u53d1\u3001\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u7684\u4e3b\u8981\u90e8\u5206\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01.jpg\"><img fetchpriority=\"high\" decoding=\"async\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01.jpg\" alt=\"\" class=\"wp-image-3975\" width=\"737\" height=\"491\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01.jpg 982w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-300x200.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-768x511.jpg 768w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-570x380.jpg 570w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-380x254.jpg 380w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-285x190.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-600x400.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_01-64x43.jpg 64w\" sizes=\"(max-width: 737px) 100vw, 737px\" \/><\/a><figcaption>\u56fe 1\uff1aONT \u663e\u793a\u7684 FEC \u89e3\u7801\u5757<\/figcaption><\/figure><\/div><p><\/p><h2 class=\"wp-block-heading\">400GE FEC \u8be6\u7ec6\u4fe1\u606f<\/h2><p>FEC \u5757\u5728\u53d1\u9001\u5668\uff08\u5bf9\u6570\u636e\u8fdb\u884c\u7f16\u7801\uff09\u548c\u63a5\u6536\u5668\uff08\u5bf9\u9519\u8bef\u8fdb\u884c\u89e3\u7801\uff0c\u7136\u540e\u68c0\u6d4b\u5e76\u7ea0\u6b63\u9519\u8bef\uff0c\u5e76\u5c06\u9002\u5f53\u7684\u4fe1\u606f\u53d1\u9001\u5230\u66f4\u9ad8\u5c42\uff09\u90fd\u6d89\u53ca\u989d\u5916\u7684\u590d\u6742\u903b\u8f91\u3002<\/p><p>\u4e0b\u8868\u663e\u793a\u4e86 PAM-4 \u4e2d\u4f7f\u7528\u7684 KR4 FEC\uff08\u7528\u4e8e NRZ \u7f16\u7801\u4fe1\u53f7\uff09\u548c KP4 FEC \u7684\u6027\u80fd\u3002\u7531\u4e8e\u6211\u4eec\u5173\u6ce8\u7684\u662f 400GE\uff0c\u56e0\u6b64\u5c06\u91cd\u70b9\u653e\u5728 KP4 FEC \u4e0a\u3002<\/p><p>KP4 FEC \u4f7f\u7528\u7531 10 \u4e2a\u6bd4\u7279\u7ec4\u6210\u7684 514 \u4e2a\u7801\u5143\uff0c\u7136\u540e\u7528 KP4 FEC \u903b\u8f91\u5bf9\u5176\u8fdb\u884c\u7f16\u7801\uff0c\u4ee5\u5f62\u6210 544 \u7801\u5143\u7801\u5b57\uff0c\u8fd9\u662f 30 \u4e2a\u201c\u5947\u5076\u201d\u7801\u5143\uff08\u6bcf\u4e2a 10 \u6bd4\u7279\uff09\u7684\u76f8\u52a0\u3002\u5728\u63a5\u6536\u5230\u7684 544 \u7801\u5143\u7801\u5b57\u5757\u4e2d\uff0c\u63a5\u6536\u5668 FEC \u53ef\u4ee5\u68c0\u6d4b\u548c\u7ea0\u6b63\u591a\u8fbe 15 \u4e2a\u9519\u8bef\u7801\u5143\u3002\u5982\u679c\u63a5\u6536\u5230\u7684\u7801\u5b57\u5177\u6709 15 \u4e2a\u6216\u66f4\u5c11\u7684\u9519\u8bef\u7801\u5143\uff0c\u5219 FEC \u63a5\u6536\u5668\u7684\u8f93\u51fa\u5c06\u662f\u5b8c\u5168\u7ea0\u6b63\u7684\u7801\u5b57\u3002\u4e25\u91cd\u9519\u8bef\u7684\u7801\u5b57\uff08\u591a\u4e8e 15 \u4e2a\u9519\u8bef\u7801\u5143\uff09\u5c06\u88ab\u68c0\u6d4b\u548c\u6807\u8bb0\uff0c\u4f46\u662f\u63a5\u6536\u5668\u4e0d\u80fd\u518d\u7ea0\u6b63\u8fd9\u4e9b\u9519\u8bef\u3002<\/p><p>FEC \u7f16\u7801\u8fc7\u7a0b\u201c\u6269\u5c55\u201d\u4fe1\u606f\u4ee5\u83b7\u5f97\u7f16\u7801\u589e\u76ca\uff0c\u5728 KP4 FEC \u7684\u60c5\u51b5\u4e0b\uff0c\u589e\u52a0\u4e86\u989d\u5916\u7684 30 \u4e2a\u7801\u5143\uff08\u539f\u59cb\u7684 5140 \u6bd4\u7279\u7801\u5b57\u5757\u589e\u52a0\u4e86 300 \u4e2a\u6bd4\u7279\uff09\u3002\u8fd9\u5c31\u589e\u52a0\u4e86\u68c0\u6d4b\u548c\u7ea0\u6b63\u4e00\u5b9a\u6570\u91cf\u9519\u8bef\u7684\u80fd\u529b\uff0c\u76f8\u5f53\u4e8e\u4e00\u79cd\u201c\u7f16\u7801\u589e\u76ca\u201d\u3002\u5b9e\u9645\u4e0a\uff0c\u94fe\u8def\u4fe1\u566a\u6bd4\u4f3c\u4e4e\u63d0\u9ad8\u4e86\u51e0 dB\u3002\u5728 KP4 FEC \u7684\u60c5\u51b5\u4e0b\uff0c\u8be5\u7f16\u7801\u589e\u76ca\u88ab\u58f0\u660e\u4e3a 6.5 dB\uff08\u5047\u8bbe\u4e3a\u6cca\u677e\u968f\u673a\u8bef\u5dee\u5206\u5e03\uff09\uff0c\u9884\u671f FEC \u7ea0\u540e\u8bef\u7801\u7387\u4e3a 10^-12\u3002\u5f53\u7136\uff0c\u8fd9\u79cd\u7f16\u7801\u589e\u76ca\u4e0d\u662f\u514d\u8d39\u7684\u3002FEC \u6709\u4e09\u4e2a\u201c\u6210\u672c\u201d\uff1a<\/p><ul class=\"wp-block-list\"><li>\u5b83\u9700\u8981\u5728\u53d1\u9001\u5668\u548c\u63a5\u6536\u5668\u7684 PCS \u5c42\u4e2d\u4f7f\u7528\u989d\u5916\u7684\u903b\u8f91\uff0c\u8fd9\u79cd\u903b\u8f91\u4f1a\u5360\u7528 ASIC \u6216 FPGA \u4e2d\u7684\u529f\u7387\u548c\u9762\u79ef\uff0c\u5f53\u7136\u4e5f\u4f1a\u5e26\u6765\u989d\u5916\u7684\u8bbe\u8ba1\u6210\u672c\u3002<\/li><li>\u5b83\u4f1a\u589e\u52a0\u5ef6\u8fdf\u3002FEC \u903b\u8f91\u9700\u8981\u65f6\u95f4\u5bf9\u7801\u5b57\u8fdb\u884c\u64cd\u4f5c\u5e76\u5bf9\u5176\u8fdb\u884c\u7f16\u7801\u548c\u89e3\u7801\u3002\u5bf9\u4e8e FEC \u5ef6\u8fdf\u5728\u6574\u4e2a\u7aef\u5230\u7aef\u4f20\u8f93\u5ef6\u8fdf\u4e2d\u5360\u5f88\u5927\u6bd4\u4f8b\u7684\u8f83\u77ed\u94fe\u8def\u6765\u8bf4\uff0c\u8fd9\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u4e25\u91cd\u7684\u95ee\u9898\u3002\u5bf9\u4e8e\u7535\u4fe1\u548c\u957f\u9014\u6765\u8bf4\uff0c\u8fd9\u901a\u5e38\u4e0d\u662f\u95ee\u9898\u3002<\/li><li>\u6240\u9700\u7684\u989d\u5916\u5947\u5076\u6821\u9a8c\u7801\u4f4d\u610f\u5473\u7740\u4f20\u8f93\u6570\u636e\u901f\u7387\u5fc5\u987b\u589e\u52a0\u3002\u8fd9\u79cd\u989d\u5916\u7684\u7ebf\u901f\u7387\u63d0\u9ad8\u4e86\u7535\u5b50\u548c\u5149\u5b50\u5143\u4ef6\u7684\u5e26\u5bbd\u3001\u6027\u80fd\u548c\u529f\u7387\u8981\u6c42\u3002<\/li><\/ul><p>\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u94fe\u8def\u7f16\u7801\u589e\u76ca\u8d85\u8fc7\u4e86 FEC \u7684\u989d\u5916\u8d1f\u62c5\uff0c\u5c3d\u7ba1\u5728\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u4eba\u4eec\u53ef\u80fd\u4f7f\u7528\u66f4\u4f4e\u7684 FEC\uff08\u66f4\u4f4e\u7684\u7f16\u7801\u589e\u76ca\u4f46\u66f4\u4f4e\u7684\u5ef6\u8fdf\uff09\u548c\u66f4\u597d\u7684\uff08\u5de5\u7a0b\uff09\u94fe\u8def\u3002<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>RS-FEC<\/strong><\/td><td><strong>\u53c2\u6570\u540d\u79f0<\/strong><\/td><td><strong>NRZ PHY<\/strong><\/td><td><strong>PAM4 PHY<\/strong><\/td><\/tr><tr><td>FEC \u7f16\u7801<\/td><td>\u2014<\/td><td>RS (528, 514, t=7, m=10)<\/td><td>RS (544, 514, t=15, m=10)<\/td><\/tr><tr><td>\u7801\u5143\u603b\u6570<\/td><td>n<\/td><td>528<\/td><td>544<\/td><\/tr><tr><td>\u62a5\u6587\u7801\u5143<\/td><td>k<\/td><td>514<\/td><td>514<\/td><\/tr><tr><td>\u5947\u5076\u7801\u5143<\/td><td>n-k<\/td><td>14<\/td><td>30<\/td><\/tr><tr><td>\u6bcf\u7801\u5143\u6bd4\u7279\u6570<\/td><td>m<\/td><td>10<\/td><td>10<\/td><\/tr><tr><td>\u53ef\u7ea0\u6b63\u7684\u7801\u5143<\/td><td>t<\/td><td>7<\/td><td>15<\/td><\/tr><tr><td>\u7f16\u7801\u589e\u76ca &nbsp;&nbsp;DFE<\/td><td>\u2014<\/td><td>4.9 dB @ 1E-15<\/td><td>5.4 dB @ 1E-15<\/td><\/tr><tr><td>\u7f16\u7801\u589e\u76ca &nbsp;&nbsp;\u968f\u673a<\/td><td>\u2014<\/td><td>5.3 dB @ 1E-12<\/td><td>6.5 dB @ 1E-12<\/td><\/tr><\/tbody><\/table><figcaption>\u56fe 2\uff1aNRZ PHY (KR4-FEC) \u4e0e PAM-4 PHY (KP4 FEC) \u7684\u6027\u80fd\u6bd4\u8f83<\/figcaption><\/figure><p><\/p><h1 class=\"wp-block-heading\">\u6d4b\u8bd5\u903b\u8f91 FEC \u5b9e\u65bd<\/h1><p>\u8fd9\u5f20\u6765\u81ea ONT FEC \u5de5\u5177\u7684\u89c6\u56fe\u5f88\u597d\u5730\u6982\u8ff0\u4e86 400GE \u94fe\u8def\u4e0a\u7684 FEC\u3002\u5b83\u662f\u53d1\u5c04\u5668\u7801\u5b57\uff08544 \u4e2a\u7801\u5143\uff0c\u6bcf\u4e2a 10 \u6bd4\u7279\uff09\u7684\u7b80\u660e\u6982\u8ff0\uff0c\u5e76\u663e\u793a\u4e86\u5bf9\u4efb\u4f55\u9009\u5b9a\u7801\u5143\uff08\u6807\u8bb0\u7801\u5143\uff09\u8fdb\u884c\u201c\u9519\u8bef\u5904\u7406\u201d\u7684\u80fd\u529b\u3002\u53ef\u4ee5\u4f7f\u7528\u6bd4\u7279\u63a9\u7801\u6765\u5bf9 10 \u6bd4\u7279\u7801\u5143\u4e2d\u7684\u5404\u4e2a\u6bd4\u7279\u8fdb\u884c\u9519\u8bef\u5904\u7406\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c400G \u4f7f\u7528\u4e24\u4e2a\u4ea4\u7ec7\u7684 FEC\uff08FEC A \u548c FEC B\uff09\u6765\u8fdb\u4e00\u6b65\u9632\u6b62\u7a81\u53d1\u8bef\u7801\uff0c\u56e0\u4e3a\u7a81\u53d1\u4f1a\u5728\u4e24\u4e2a\u4ea4\u9519\u7684\u7801\u5b57\u4e4b\u95f4\u88ab\u201c\u7a00\u91ca\u201d\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03.jpg\"><img decoding=\"async\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03.jpg\" alt=\"\" class=\"wp-image-3976\" width=\"752\" height=\"544\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03.jpg 1002w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03-300x217.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03-768x556.jpg 768w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03-600x434.jpg 600w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_03-64x46.jpg 64w\" sizes=\"(max-width: 752px) 100vw, 752px\" \/><\/a><figcaption>\u56fe 3\uff1a\u663e\u793a\u7cbe\u786e\u7684\u9519\u8bef\u5b9a\u4f4d\u80fd\u529b\u7684 ONT FEC \u538b\u529b\u5e94\u7528\u7528\u6237\u6a21\u5f0f\u5c4f\u5e55<\/figcaption><\/figure><\/div><p><\/p><h1 class=\"wp-block-heading\">\u7b80\u5355\u7684 FEC \u6027\u80fd\u76d1\u63a7<\/h1><p>\u4eca\u5929\u7684\u5927\u591a\u6570\u6d4b\u8bd5\u96c6\u90fd\u663e\u793a\u4e86 VIAVI \u9996\u521b\u7684\u6bcf\u7801\u5b57\u9519\u8bef\u7801\u5143\u8868\u89c6\u56fe\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u663e\u793a\u4e86\u4e00\u4e2a\u201c\u574f\u201d\u94fe\u8def\u7684\u8f93\u51fa\uff08\u5728\u672c\u4f8b\u4e2d\uff0c\u8be5\u94fe\u8def\u88ab\u8bbe\u8ba1\u6210\u5bfc\u81f4\u9519\u8bef\uff09\u3002\u8bf7\u6ce8\u610f\uff0c\u5c3d\u7ba1\u7801\u5b57\u4e2d\u7684\u7edd\u5927\u591a\u6570\u7801\u5143\u6ca1\u6709\u9519\u8bef\uff080 \u4e2a\u9519\u8bef\u7801\u5143\uff09\uff0c\u5e76\u4e14\u9519\u8bef\u7801\u5143\u8ba1\u6570\u8fc5\u901f\u4e0b\u964d\uff08\u5bf9\u4e8e\u6bcf\u4e2a\u989d\u5916\u7684\u9519\u8bef\u7801\u5143\u8d85\u8fc7\u4e24\u4e2a\u6570\u91cf\u7ea7\uff09\u5230\u6bcf\u4e2a\u7801\u5b57 5 \u4e2a\u9519\u8bef\u7801\u5143\u3002\u5173\u4e8e\u8fd9\u662f\u4e00\u4e2a\u574f\u94fe\u8def\u7684\u6307\u793a\u662f\u7531 6 \u5230 15 \u4e2a\u9519\u8bef\u7801\u5143\u8ba1\u6570\u4e0a\u7684\u5f88\u957f\u7684\u5c3e\u90e8\u4ee5\u53ca\u8be5\u94fe\u8def\u6bcf\u4e2a\u7801\u5b57\u4ecd\u7136\u5177\u6709\u4e0d\u53ef\u7ea0\u6b63\u7684 (&gt;=16) \u4e2a\u9519\u8bef\u7801\u5143\u7684\u4e8b\u5b9e\u7ed9\u51fa\u7684\u3002\u8fd9\u4e00\u94fe\u8def\u80af\u5b9a\u9700\u8981\u4f7f\u7528 VIAVI\u201c\u9ad8\u7ea7\u9519\u8bef\u5206\u6790\u201d\u5957\u4ef6\u7b49\u5de5\u5177\u8fdb\u4e00\u6b65\u8c03\u67e5\u3002<\/p><p>\u9519\u8bef\u7801\u5143\u8ba1\u6570\u663e\u793a\u4e86\u7cfb\u7edf\u5728\u7ed9\u5b9a\u94fe\u8def\u4e0a\u7684\u6027\u80fd\uff0c\u4f46\u5b83\u4e0d\u80fd\u9a8c\u8bc1 FEC \u5b9e\u65bd\u6216\u5bf9\u5176\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\uff0c\u800c\u4e14\u5b83\u4eec\u51e0\u4e4e\u4e0d\u80fd\u6df1\u5165\u4e86\u89e3\u9519\u8bef\u7684\u6839\u672c\u539f\u56e0\u3002\u7801\u5143\u8ba1\u6570\u89c6\u56fe\u4ec5\u663e\u793a\u4f7f\u7528\u6d4b\u8bd5\u96c6 FEC \u5757\u7684\u94fe\u8def\u7684\u6d4b\u8bd5\u96c6\u89c6\u56fe\uff0c\u800c\u4e0d\u663e\u793a\u4efb\u4f55 DUT FEC \u63a5\u6536\u5668\u5b9e\u73b0\u65b9\u6cd5\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_04.jpg\"><img decoding=\"async\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_04.jpg\" alt=\"\" class=\"wp-image-3977\" width=\"419\" height=\"348\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_04.jpg 559w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_04-300x249.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_04-64x53.jpg 64w\" sizes=\"(max-width: 419px) 100vw, 419px\" \/><\/a><figcaption>\u56fe 4\uff1a400GE \u94fe\u8def\u7684\u6bcf\u7801\u5b57\u7ecf\u5178\u9519\u8bef\u7801\u5143\u89c6\u56fe<\/figcaption><\/figure><\/div><p><\/p><h1 class=\"wp-block-heading\">\u9700\u8981\u6d4b\u8bd5\u548c\u9a8c\u8bc1\u7684 FEC \u5c5e\u6027<\/h1><p>FEC \u7684\u4e24\u4e2a\u6838\u5fc3\u65b9\u9762\u9700\u8981\u5728\u7814\u53d1\u548c\u9a8c\u8bc1\u9636\u6bb5\u8fdb\u884c\u6d4b\u8bd5\u548c\u9a8c\u8bc1 \u2013 FEC \u7684\u903b\u8f91\u201c\u6b63\u786e\u6027\u201d\u548c\u5b9e\u9645\u5b9e\u73b0\u7684\u7a33\u5b9a\u6027\u3002\u5c3d\u7ba1\u5b83\u4eec\u662f\u76f8\u4e92\u5173\u8054\u548c\u76f8\u4e92\u4ea4\u9519\u7684\uff0c\u4f46\u5b83\u4eec\u90fd\u9700\u8981\u4e0d\u540c\u7684\u6d4b\u8bd5\u65b9\u6cd5\u6765\u786e\u4fdd\u7a33\u5065\u6027\u548c\u53ef\u9760\u6027\u3002VIAVI \u901a\u8fc7\u5176 FEC \u6d4b\u8bd5\u5e94\u7528\u7a0b\u5e8f\u96c6\u4e2d\u7684\u4e24\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5b9e\u73b0\u4e86\u8fd9\u4e00\u6982\u5ff5\uff1a<\/p><h2 class=\"wp-block-heading\">FEC \u538b\u529b\u6d4b\u8bd5<\/h2><p>\u8fd9\u9879\u6d4b\u8bd5\u7684\u91cd\u70b9\u662f FEC \u7684\u903b\u8f91\u9a8c\u8bc1\uff0c\u5b83\u786e\u4fdd FEC \u5bf9\u7ed9\u5b9a\u7801\u5b57\u4e2d\u7684\u4e00\u7cfb\u5217\u9519\u8bef\u8ba1\u6570\u548c\u4f4d\u7f6e\u5177\u6709\u771f\u5b9e\u7684\u8986\u76d6\u8303\u56f4\u3002\u8003\u8651\u5230\u6709\u65e0\u6570\u79cd\u53ef\u80fd\u7684\u7ec4\u5408\uff0c\u4e0d\u53ef\u80fd\u6db5\u76d6\u6240\u6709\u7ec4\u5408\uff0c\u4f46\u8fd9\u4e9b\u5e94\u7528\u7a0b\u5e8f\u8db3\u591f\u201c\u667a\u80fd\u201d\uff0c\u53ef\u4ee5\u63d0\u4f9b\u53ef\u9760\u7684\u8986\u76d6\u8303\u56f4\u3002<\/p><p>VIAVI FEC \u538b\u529b\u5e94\u7528\u7a0b\u5e8f\u5141\u8bb8\u7528\u6237\u901a\u8fc7\u624b\u52a8\u5b9a\u4f4d\u9519\u8bef\u6765\u7cbe\u786e\u63a2\u6d4b FEC\uff08\u5982\u56fe 3 \u6240\u793a\uff09\uff0c\u4f46\u5b83\u8fd8\u652f\u6301\u5168\u9762\u7684\u81ea\u52a8\u6a21\u5f0f\uff0c\u8be5\u6a21\u5f0f\u53ef\u4ee5\u626b\u63cf\u7801\u5b57\u4e2d\u5de8\u5927\u7684\u9519\u8bef\u4f4d\u7f6e\u6f5c\u5728\u8303\u56f4\uff0c\u67e5\u627e 1 \u5230 15 \u4e2a\u9519\u8bef\u7801\u5143\uff0c\u4ece\u800c\u63d0\u4f9b\u53ef\u9760\u7684\u8986\u76d6\u8303\u56f4\u6765\u9a8c\u8bc1 FEC \u7684\u903b\u8f91\u6027\u80fd\u3002\u867d\u7136\u81ea\u52a8\u6a21\u5f0f\u4e0d\u80fd\u8986\u76d6\u9519\u8bef\u7801\u5143\u4f4d\u7f6e\u548c\u8ba1\u6570\u7684\u6bcf\u4e00\u4e2a\u7ec4\u5408\uff0c\u4f46\u5e94\u7528\u7a0b\u5e8f\u7ecf\u8fc7\u7cbe\u5fc3\u8bbe\u8ba1\uff0c\u80fd\u591f\u5728\u5408\u7406\u7684\u8fd0\u884c\u65f6\u95f4\u5185\u63d0\u4f9b\u6700\u4f73\u8986\u76d6\u3002\u7528\u6237\u53ef\u4ee5\u8c03\u6574\u6d4b\u8bd5\u7684\u201c\u6df1\u5ea6\u201d\uff0c\u4ee5\u5339\u914d\u6f5c\u5728\u7684\u6d4b\u8bd5\u6267\u884c\u65f6\u95f4\u3002\u5982\u679c\u81ea\u52a8\u6d4b\u8bd5\u663e\u793a\u51fa\u4e86\u95ee\u9898\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528\u624b\u52a8\u6d4b\u8bd5\u6765\u8c03\u67e5\u903b\u8f91\u7684\u54ea\u4e2a\u533a\u57df\u4ee5\u53ca\u5728\u4ec0\u4e48\u6761\u4ef6\u4e0b\u6ca1\u6709\u6309\u9884\u671f\u6267\u884c\u3002<\/p><h2 class=\"wp-block-heading\">\u52a8\u6001 FEC \u538b\u529b<\/h2><p>\u5373\u4f7f FEC \u903b\u8f91\u6b63\u786e\uff0c\u88ab\u6d4b\u786c\u4ef6\u4ecd\u53ef\u80fd\u7531\u4e8e\u5b9e\u65bd\u4e2d\u7684\u6545\u969c\u800c\u5931\u8d25\uff0c\u7279\u522b\u662f\u5728\u7535\u6e90\u5b8c\u6574\u6027\u7b49\u6311\u6218\u65b9\u9762\u3002FEC \u89e3\u7801\u548c\u6821\u9a8c\u5757\u901a\u5e38\u5728\u5177\u6709\u8bb8\u591a\u57fa\u4e8e XOR \u7684\u903b\u8f91\u95e8\u7684\u5bbd\u5e76\u884c\u603b\u7ebf\u7ed3\u6784\u4e2d\u5b9e\u73b0\u3002\u9519\u8bef\u68c0\u6d4b\u548c\u7ea0\u6b63\u4f1a\u5bfc\u81f4\u903b\u8f91\u529f\u7387\u9700\u6c42\u7684\u5feb\u901f\u53d8\u5316\uff0c\u8fd9\u4e9b\u5feb\u901f\u7684\u7535\u6d41\u5c16\u5cf0\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7535\u6e90\u5b8c\u6574\u6027\u95ee\u9898\uff0c\u7279\u522b\u662f\u5728 FPGA \u4e2d\u3002\u5b83\u4eec\u8fd8\u53ef\u80fd\u66b4\u9732\u51fa\u8d1f\u8f7d\u70b9\u8f6c\u6362\u5668\u8f93\u51fa\u963b\u6297\u52a8\u6001\u8303\u56f4\u4ee5\u53ca PCB \u5e03\u5c40\u548c\u89e3\u8026\u7684\u95ee\u9898\u3002\u8be5\u5e94\u7528\u7a0b\u5e8f\u53ef\u4ee5\u4e0e\u793a\u6ce2\u5668\u7b49\u5de5\u5177\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u8ddf\u8e2a IC \u5c01\u88c5\u5468\u56f4\u7684\u7535\u6e90\u52a8\u6001\u8303\u56f4\u3002<\/p><div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><a href=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05.jpg\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05.jpg\" alt=\"\" class=\"wp-image-3978\" width=\"595\" height=\"396\" srcset=\"http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05.jpg 595w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05-300x200.jpg 300w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05-570x380.jpg 570w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05-380x254.jpg 380w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05-285x190.jpg 285w, http:\/\/www.comtest.cn\/wp-content\/uploads\/2021\/05\/FEC_05-64x43.jpg 64w\" sizes=\"(max-width: 595px) 100vw, 595px\" \/><\/a><figcaption>\u56fe 5\uff1aONT \u52a8\u6001 FEC \u538b\u529b\u63a7\u5236\u9875\u9762\uff0c\u663e\u793a\u4ee5\u52a8\u6001\u65b9\u5f0f\u6539\u53d8\u538b\u529b\u7684\u80fd\u529b<\/figcaption><\/figure><\/div><p>\u4e0a\u9762\u7684\u5c4f\u5e55\u663e\u793a\u4e86\u5bf9 FEC \u65bd\u52a0\u52a8\u6001\u538b\u529b\u6240\u9700\u7684\u4e00\u4e9b\u91cd\u8981\u8bbe\u7f6e\u3002\u7528\u6237\u62e8\u5165\u7801\u5b57\u4e2d\u7684\u9519\u8bef\u7801\u5143\u6570\u91cf\uff0c\u4f46\u662f\u73b0\u5728\u53ef\u4ee5\u901a\u8fc7\u9519\u8bef\u6ce8\u5165\u7684\u901f\u7387\u6765\u63d0\u4f9b\u989d\u5916\u7684\u63a7\u5236\uff0c\u8fd9\u662f\u4ee5\u9891\u7387\u6765\u8868\u793a\u7684\uff0c\u56e0\u4e3a\u8fd9\u662f\u529f\u7387\u548c\u7535\u6d41\u8109\u51b2\u7684\u7269\u7406\u901f\u7387\u3002\u80fd\u591f\u4ee5\u4e0d\u540c\u7684\u9891\u7387\u9a71\u52a8\u529f\u7387\u8109\u51b2\uff08\u5e76\u5728\u8303\u56f4\u5185\u626b\u63cf\uff09\u53ef\u4ee5\u7528\u6765\u5bf9\u7535\u6e90\u548c\u4e0e FEC \u63a5\u6536\u5668\u903b\u8f91\u76f8\u5173\u7684\u5143\u4ef6\u65bd\u52a0\u538b\u529b\u3002\u4e00\u4e2a\u201c\u597d\u201d\u7684\u5b9e\u73b0\u65b9\u6cd5\u5728\u6240\u6709\u6761\u4ef6\u4e0b\u90fd\u4f1a\u6309\u9884\u671f\u6267\u884c\uff0c\u800c\u4e0d\u7a33\u5b9a\u7684\u5b9e\u73b0\u65b9\u6cd5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0d\u53ef\u9884\u6d4b\u548c\u4e0d\u4e00\u81f4\u7684\u7ed3\u679c\uff0c\u751a\u81f3\u53ef\u80fd\u4f1a\u9501\u5b9a\u6216\u5d29\u6e83\u3002\u5f53\u7136\uff0c\u8fd9\u79cd\u538b\u529b\u7a81\u53d1\u9519\u8bef\u9891\u7387\u7684\u7ec4\u5408\u5728\u8be5\u9886\u57df\u53ef\u80fd\u975e\u5e38\u7f55\u89c1\uff0c\u4f46\u5f88\u96be\u8fdb\u884c\u6545\u969c\u6392\u67e5\u6216\u91cd\u73b0\uff0c\u56e0\u6b64\u5728\u7814\u53d1\u548c SVT \u9636\u6bb5\u8fdb\u884c\u7e41\u91cd\u548c\u5168\u9762\u7684\u538b\u529b\u9a8c\u8bc1\u5bf9\u4e8e\u751f\u4ea7\u7a33\u5b9a\u548c\u5408\u89c4\u7684\u4ea7\u54c1\u81f3\u5173\u91cd\u8981\u3002<\/p><p>\u8fd9\u7c7b\u6d4b\u8bd5\u8fd8\u53ef\u4ee5\u5728\u6e29\u5ea6\u548c\u7535\u6e90\u7535\u538b\u6c34\u5e73\u4e0a\u6267\u884c\uff0c\u4ee5\u5b9e\u73b0\u5168\u88d5\u5ea6\u6d4b\u8bd5\u5e76\u4e86\u89e3\u5b9e\u9645\u6545\u969c\u6a21\u5f0f\u3002<\/p><figure class=\"wp-block-table\"><table><tbody><tr><td><strong>\u6d4b\u8bd5\u6a21\u5f0f<\/strong><\/td><td><strong>\u7279\u5f81<\/strong><\/td><td><strong>\u5e94\u7528\u9886\u57df<\/strong><\/td><\/tr><tr><td>FEC \u9a8c\u8bc1<\/td><td>FEC \u903b\u8f91\u7684\u5206\u6b65\u7ec4\u5408\u6d4b\u8bd5\u3002<\/td><td>FEC IP \u4f9b\u5e94\u5546\u9009\u62e9 FEC IP \u9a8c\u8bc1 \u6574\u4e2a\u6e29\u5ea6\u8303\u56f4\u5185\u7684\u65f6\u5e8f\u7a33\u5b9a\u6027 \u4e92\u64cd\u4f5c\u8c03\u8bd5 FEC BER \u7684\u4e3b\u673a\u8f6f\u4ef6\u9a8c\u8bc1<\/td><\/tr><tr><td>FEC \u7528\u6237\u6a21\u5f0f<\/td><td>\u80fd\u591f\u7cbe\u786e\u5b9a\u4f4d\u7801\u5b57\u5185\u7684\u9519\u8bef<\/td><td>\u7279\u5b9a\u903b\u8f91\u9886\u57df\u7684\u6df1\u5ea6\u6545\u969c\u6392\u67e5\u548c\u7814\u53d1 FPGA \u56e2\u961f\u5728\u65f6\u5e8f\u88d5\u5ea6\u7a33\u5b9a\u6027\u65b9\u9762\u7684\u7814\u7a76 \u56fa\u4ef6\u56e2\u961f\u4e3a FEC \u903b\u8f91\u7f16\u5199\u63a7\u5236\u5de5\u5177<\/td><\/tr><tr><td>\u52a8\u6001 FEC \u7535\u6e90\u5b8c\u6574\u6027<\/td><td>\u52a8\u6001\u9519\u8bef\u7a81\u53d1<\/td><td>FPGA \u548c ASIC \u5e03\u5c40 \u4fe1\u53f7\u5b8c\u6574\u6027 \u7535\u6e90\u8bbe\u8ba1 PCB \u89e3\u8026 \u6700\u5927\u529f\u7387\u6d88\u8017\u548c\u70ed\u6d4b\u8bd5<\/td><\/tr><\/tbody><\/table><\/figure><h1 class=\"wp-block-heading\">\u603b\u7ed3<\/h1><p>FEC \u662f\u9ad8\u901f\u4ee5\u592a\u7f51\u7684\u5173\u952e\u5143\u7d20\uff0c\u5728\u7f51\u7edc\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u9ad8\u901f\u4ee5\u592a\u7f51\u5fc5\u987b\u5177\u5907 FEC \u7684\u53ef\u9760\u6027\u548c\u4e92\u64cd\u4f5c\u6027\u3002\u5982\u679c\u6ca1\u6709\u6b63\u786e\u7684\u5de5\u5177\uff0c\u5c31\u4e0d\u53ef\u80fd\u53ef\u9760\u5730\u8986\u76d6 FEC \u6027\u80fd\u3002\u52a8\u6001\u95ee\u9898\u4f7f\u903b\u8f91\u4e92\u64cd\u4f5c\u7684\u6311\u6218\u8fdb\u4e00\u6b65\u590d\u6742\u5316\uff0c\u8fd9\u79cd\u7f55\u89c1\u4e14\u968f\u673a\u7684\u95ee\u9898\u4f1a\u5bfc\u81f4\u865a\u5047\u7684\u3001\u96be\u4ee5\u6392\u9664\u6545\u969c\u7684\u4e8b\u4ef6\u3002<\/p><p>\u7b80\u5355\u7684 FEC \u6982\u8ff0\u5de5\u5177\u53ef\u4ee5\u63d0\u4f9b\u94fe\u8def\u8fd0\u884c\u72b6\u51b5\u7684\u975e\u5e38\u57fa\u672c\u7684\u6982\u8ff0\uff0c\u4f46\u65e0\u6cd5\u6df1\u5165\u4e86\u89e3\u771f\u5b9e\u7684 FEC \u548c\u94fe\u8def\u6027\u80fd\u3002\u53ea\u6709 ONT \u4e0a\u7684\u9ad8\u7ea7\u9519\u8bef\u5206\u6790\u5e94\u7528\u7a0b\u5e8f\u624d\u80fd\u6df1\u5165\u4e86\u89e3\u9519\u8bef\u7684\u6027\u8d28\uff0c\u800c FEC \u5de5\u5177\u5957\u4ef6\u5bf9\u4e8e\u63d0\u4f9b\u80fd\u591f\u5728 400G 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