{"id":5577,"date":"2025-08-02T00:00:00","date_gmt":"2025-08-02T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/fec-forward-error-correction-in-optical-communication\/"},"modified":"2026-06-22T08:42:28","modified_gmt":"2026-06-22T08:42:28","slug":"fec-forward-error-correction-in-optical-communication","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/fec-forward-error-correction-in-optical-communication","title":{"rendered":"\uad11 \ud1b5\uc2e0\uc5d0\uc11c FEC(Forward Error Correction, \uc804\ubc29 \uc624\ub958 \uc815\uc815)\ub780 \ubb34\uc5c7\uc778\uac00?"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd.jpg\" alt=\"What Is FEC?\" class=\"wp-image-5576\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd.jpg 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-300x178.jpg 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-1024x608.jpg 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-768x456.jpg 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9d91539e3f2f4415994b3a16805190dd-18x12.jpg 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc21c\ubc29\ud5a5 \uc624\ub958 \uc815\uc815(FEC)<\/strong> \ud604\ub300 \uad11\ud1b5\uc2e0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uae30\ucd08\uc801\uc778 \uae30\uc220\ub85c, \ud2b9\ud788 \uc7a5\uac70\ub9ac \uace0\uc18d \ub370\uc774\ud130 \uc804\uc1a1\uc5d0 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc7ac\uc804\uc1a1 \uc5c6\uc774 \uc218\uc2e0\uae30\uac00 \ube44\ud2b8 \uc624\ub958\ub97c \ud0d0\uc9c0\ud558\uace0 \uc815\uc815\ud560 \uc218 \uc788\ub3c4\ub85d \ud558\uc5ec \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \uc774 \uae30\ub2a5\uc740 \uad11 \ub124\ud2b8\uc6cc\ud06c\uc758 \uc2e0\ub8b0\uc131, \ud6a8\uc728\uc131 \ubc0f \uc131\ub2a5\uc744 \uac1c\uc120\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ubcf8 \uae30\uc0ac\uc5d0\uc11c\ub294 FEC\uac00 \ubb34\uc5c7\uc778\uc9c0, \uc791\ub3d9 \uc6d0\ub9ac, \uc0ac\uc6a9\ub418\ub294 \ucf54\ub4dc \uc720\ud615, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\uad11 \ud2b8\ub79c\uc2a4\uc2dc\ubc84<\/a>, \uc77c\ubc18\uc801\uc778 \uc774\ub354\ub137 \ud45c\uc900 \ubc0f \uc2e4\uc6a9\uc801\uc778 \ubc30\ud3ec \uace0\ub824 \uc0ac\ud56d\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcd8 \uc21c\ubc29\ud5a5 \uc624\ub958 \uc815\uc815(FEC)\uc774\ub780?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc21c\ubc29\ud5a5 \uc624\ub958 \uc815\uc815(FEC)\uc740 \ub370\uc774\ud130 \uc2a4\ud2b8\ub9bc\uc5d0 \uc911\ubcf5 \ube44\ud2b8\ub97c \ucd94\uac00\ud558\ub294 \ub514\uc9c0\ud138 \uc2e0\ud638 \ucc98\ub9ac \uae30\uc220\ub85c, \uc218\uc2e0\uae30\uac00 \uc804\uc1a1 \uc624\ub958\ub97c \uc0ac\uc804\uc5d0 \uc2dd\ubcc4\ud558\uace0 \uc815\uc815\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uace0\uc18d \uad11 \ub124\ud2b8\uc6cc\ud06c(\uc608: 25G, 100G, 200G, 400G)\uc5d0\uc11c FEC\ub294 \ub2e4\uc74c\uc744 \uc704\ud574 \ud544\uc218\uc801\uc785\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\ud604\uc7a5 \uace0\uc7a5\ub960 <strong>\ube44\ud2b8 \uc624\ub958\uc728(<\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>BER<\/strong><\/a><strong>)<\/strong><\/p><\/li><li><p>\uc9c0\uc6d0 <strong>\ub354 \uae34 \uc804\uc1a1 \uac70\ub9ac<\/strong><\/p><\/li><li><p>\ubcf4\uc7a5 <strong>\uc2e0\ud638 \ubb34\uacb0\uc131<\/strong> \uc7a1\uc74c\uc774 \ub9ce\uac70\ub098 \uc190\uc2e4\uc774 \ud070 \ud658\uacbd\uc5d0\uc11c<\/p><\/li><li><p>\uc720\uc9c0 <strong>How to reduce link flapping, packet loss, and CRC\/FCS errors<\/strong> \ub2e4\uc911 \ubca4\ub354 \ud658\uacbd \uac04<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2699\ufe0f FEC\ub294 \uc5b4\ub5bb\uac8c \uc791\ub3d9\ud558\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\ub294 \uc798 \uc815\uc758\ub41c \uc218\ud559\uc801 \uaddc\uce59\uc5d0 \ub530\ub77c \uc1a1\uc2e0 \ub370\uc774\ud130\uc5d0 \ucd94\uac00 \ube44\ud2b8\ub97c \uc778\ucf54\ub529\ud569\ub2c8\ub2e4. \uc218\uc2e0\uae30\ub294 \uc774\ub7ec\ud55c \ube44\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubd84\uc0b0, \uc7a1\uc74c \ub610\ub294 \ud06c\ub85c\uc2a4\ud1a0\ud06c\uc640 \uac19\uc740 \uc65c\uace1\uc73c\ub85c \uc778\ud574 \ubc1c\uc0dd\ud55c \uc81c\ud55c\ub41c \uc218\uc758 \uc624\ub958\ub97c \ud0d0\uc9c0\ud558\uace0 \uc815\uc815\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\uc77c\ubc18\uc801\uc778 FEC \ucf54\ub4dc \uc720\ud615:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\ub9ac\ub4dc-\uc194\ub85c\ubaac(RS) \ucf54\ub4dc<\/strong><br\/>\uc774\ub354\ub137 \ubc0f \uad11 \ud2b8\ub79c\uc2a4\uc2dc\ubc84\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \ube14\ub85d \uae30\ubc18 \ucf54\ub4dc\uc785\ub2c8\ub2e4. RS(528,514) \ubc0f RS(544,514) \uad6c\uc131\uc740 \uc5ec\ub7ec \uc2ec\ubcfc \uc624\ub958\ub97c \uc815\uc815\ud560 \uc218 \uc788\uc73c\uba70 \ubc84\uc2a4\ud2b8 \uc624\ub958 \uc815\uc815\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/p><\/li><li><p><strong>BCH(Bose\u2013Chaudhuri\u2013Hocquenghem) \ucf54\ub4dc<\/strong><br\/>\ub0ae\uc740 \uc9c0\uc5f0 \uc2dc\uac04\uc744 \uc81c\uacf5\ud558\uba74\uc11c \ub192\uc740 \uc624\ub958 \uc815\uc815 \ub2a5\ub825\uc744 \uac16\ucd98 \uc774\uc9c4 \ucf54\ub4dc\ub85c, \ud558\ub4dc\uc6e8\uc5b4 \uc81c\uc57d \uc870\uac74\uc774 \uc788\ub294 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ub54c\ub54c\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ud604\ub300 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/what-is-pam4-four-level-pulse-amplitude-modulation-basics\/\">PAM4<\/a> \uc2dc\uc2a4\ud15c\uc5d0\uc11c\uc758 \uc0ac\uc6a9\uc740 \uc81c\ud55c\uc801\uc785\ub2c8\ub2e4.<\/p><\/li><li><p><strong>LDPC(Low-Density Parity-Check) \ucf54\ub4dc<\/strong><br\/>\uc0e4\ub17c \ud55c\uacc4\uc5d0 \uadfc\uc811\ud55c \uc131\ub2a5\uc73c\ub85c \uc54c\ub824\uc838 \uc788\uc73c\uba70, 400G\/800G \uc774\ub354\ub137 \ubc0f \ucf54\ud788\ub7f0\ud2b8 \uc2dc\uc2a4\ud15c\uc5d0 \ucc44\ud0dd\ub429\ub2c8\ub2e4. \ub192\uc740 \uc2ec\ubcfc \uc624\ub958\uc728\uc5d0 \ub300\ud574 \uc6b0\uc218\ud55c \uc815\uc815 \uc131\ub2a5\uc744 \uc81c\uacf5\ud558\uc9c0\ub9cc, \ub354 \ubcf5\uc7a1\ud55c \ub514\ucf54\ub354\uac00 \ud544\uc694\ud558\uba70 \uc9c0\uc5f0 \uc2dc\uac04\uc774 \ub354 \ud07d\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>\ud83d\udd0d \uc608\uc2dc:<\/strong><\/p><p>100G \uc774\ub354\ub137 \uc2dc\uc2a4\ud15c\uc5d0\uc11c <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/488452.htm\"><strong>100GBASE-LR4<\/strong><\/a>, RS-FEC(\uc77c\ubc18\uc801\uc73c\ub85c RS(528,514))\ub294 \uc7a5\uac70\ub9ac \uad11\uc12c\uc720 \ub9c1\ud06c\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uad11\ud559\uc801 \uc190\uc2e4\uc744 \ubcf4\uc0c1\ud558\uae30 \uc704\ud574 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774\ub294 \uc6d0\uc2dc \uc804-FEC \ube44\ud2b8 \uc624\ub958\uc728(BER)\uc774 10\u207b\u00b3 \uc218\uc900\uc77c\uc9c0\ub77c\ub3c4, \ud6c4-FEC BER \ubaa9\ud45c\uce58\uc778 10\u207b\u00b9\u00b2 \ub610\ub294 \uadf8 \uc774\uc0c1\uc744 \ub2ec\uc131\ud560 \uc218 \uc788\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83e\udde9 \uad11\ud559 \ud2b8\ub79c\uc2a4\ub9ac\ubc84\uc5d0\uc11c FEC\uac00 \uc911\uc694\ud55c \uc774\uc720<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\ub294 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">\uad11 \ubaa8\ub4c8<\/a>, \ud2b9\ud788 25Gbps \uc774\uc0c1\uc758 \uc18d\ub3c4\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774\ub294 \ub2e4\uc74c\uc744 \uac00\ub2a5\ud558\uac8c \ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>\u2705 \ub354 \uae34 \uad11\uc12c\uc720 \uad6c\uac04\uc5d0 \ub300\ud55c \uc2e0\ub8b0\uc131 \uc788\ub294 \uc791\ub3d9<\/p><\/li><li><p>\u2705 \ub0ae\uc740 \ub4f1\uae09\uc758 \uad11\ud559 \ubd80\ud488\uacfc\uc758 \ud638\ud658\uc131<\/p><\/li><li><p>\u2705 \uc11c\ub85c \ub2e4\ub978 \ubca4\ub354\uc5d0\uc11c \uc81c\uc870\ub41c \uc7a5\ube44 \uac04\uc758 \uc6d0\ud65c\ud55c \uc0c1\ud638 \uc6b4\uc6a9\uc131<\/p><\/li><li><p>\u2705 \ud2b9\ud788 <strong>PAM4<\/strong> \ubcc0\uc870 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc5c4\uaca9\ud55c BER \ubaa9\ud45c\uce58 \ub2ec\uc131<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\ub294 \ub514\uc9c0\ud138 \ubcf4\uc815\uc744 \ud1b5\ud574 \ubb3c\ub9ac\uc801 \uc81c\uc57d\uc744 \ubcf4\uc0c1\ud568\uc73c\ub85c\uc368 \ube44\uc6a9 \ud6a8\uc728\uc801\uc778 \uad11\ud559 \ubd80\ud488\uc758 \uc0ac\uc6a9\uc744 \uac00\ub2a5\ud558\uac8c \ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098, <strong>FEC \uc9c0\uc5f0 \uc2dc\uac04<\/strong> \ubc0f \uc0ac\uc6a9\ub418\ub294 FEC \uc720\ud615\uc740 \uc2dc\uc2a4\ud15c \uc694\uad6c \uc0ac\ud56d \ubc0f \uc9c0\uc6d0\ub418\ub294 \ud45c\uc900\uacfc \uc77c\uce58\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udccf \uc774\ub354\ub137\uc5d0\uc11c \uc77c\ubc18\uc801\uc778 FEC \ud45c\uc900<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\ud45c\uc900<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>FEC \uc720\ud615<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\uc801\uc6a9 \ubd84\uc57c<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3bj<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>100GBASE-CR4, 100GBASE-KR4(NRZ)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3by<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25GBASE-CR-S(NRZ)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>IEEE 802.3cd<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>KP4-FEC(RS(544,514))<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>50G, 100G, 200G(PAM4)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>100G \ub78c\ub2e4 MSA<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(544,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PAM4 \uae30\ubc18 100G \ub2e8\uc77c \ub808\uc778 \uad11\ud559 \ubaa8\ub4c8<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udd0e <strong>\ucc38\uace0<\/strong>: RS(544,514)\ub294 KP4-FEC\ub77c\uace0\ub3c4 \ud558\uba70, \uc2ec\ubcfc \uc624\ub958\uc728\uc774 \ubcf8\uc9c8\uc801\uc73c\ub85c \ub192\uc740 PAM4 \uae30\ubc18 \uc2dc\uc2a4\ud15c\uc5d0 \ud544\uc218\uc801\uc73c\ub85c \uc694\uad6c\ub418\ub294 \uac15\ub825\ud55c \ubcc0\uc885\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub9c1\ud06c\uc5d0\uc11c FEC\ub97c \ube44\ud65c\uc131\ud654\ud558\ub294 \uac83\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ud45c\uc900\uc5d0 \uc758\ud574 \ud5c8\uc6a9\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\u26a0\ufe0f FEC \ubc30\ud3ec \uc2dc \uace0\ub824 \uc0ac\ud56d<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>FEC\ub294 \uad11\ud559 \ub9c1\ud06c\uc758 \uc591 \ub05d\ub2e8\uc5d0\uc11c \ubaa8\ub450 \ud65c\uc131\ud654\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/strong> \uc124\uc815 \ubd88\uc77c\uce58(\uc608: \ud55c\ucabd \ub05d\ub2e8\uc740 FEC \ud65c\uc131\ud654, \ub2e4\ub978 \ucabd\uc740 \ube44\ud65c\uc131\ud654)\ub294 \ub9c1\ud06c \uc124\uc815 \uc2e4\ud328 \ub610\ub294 \ub192\uc740 BER\uc744 \ucd08\ub798\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p><\/li><li><p><strong>PAM4 \uc2dc\uc2a4\ud15c<\/strong>, \uc608\ub97c \ub4e4\uc5b4 100G DR, 200G FR4 \ub610\ub294 400G DR4\ub294, <strong>\ucd5c\uc18c BER \ubaa9\ud45c\uce58\ub97c \ub2ec\uc131\ud558\uae30 \uc704\ud574<\/strong> FEC\ub97c \uc694\uad6c\ud569\ub2c8\ub2e4. \uc774\ub294 \ubc00\uc9d1\ub41c \ubcc0\uc870 \ubc29\uc2dd \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p><\/li><li><p><strong>FEC\ub294 \uc9c0\uc5f0 \uc2dc\uac04\uc744 \ucd94\uac00\ud569\ub2c8\ub2e4.<\/strong> (\uc608: KP4-FEC\uc758 \uacbd\uc6b0 \uc57d 100ns\u2013200ns). \uc774\ub294 \uc9c0\uc5f0 \ubbfc\uac10 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc0c1\ub2f9\ud55c \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p><\/li><li><p><strong>\ud6c4-FEC BER \ub300 \uc804-FEC BER<\/strong>: \ub300\ubd80\ubd84\uc758 \uc2dc\uc2a4\ud15c \uc0ac\uc591\uc740 \ud6c4-FEC BER\uc744 \uae30\uc900\uc73c\ub85c \ud569\ub2c8\ub2e4. \uc774 \ucc28\uc774\ub97c \uc774\ud574\ud558\ub294 \uac83\uc740 \uc2dc\uc2a4\ud15c \uc131\ub2a5 \ud3c9\uac00 \uc2dc \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd0c LINK-PP \uad11\ud559 \ubaa8\ub4c8\uc758 FEC \uc9c0\uc6d0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/\"><strong>LINK-PP<\/strong><\/a>, \ub2f9\uc0ac\uc758 \ub9ce\uc740 \ud2b8\ub79c\uc2a4\ub9ac\ubc84\ub294 IEEE \ubc0f MSA \ud45c\uc900 \uc804\ubc18\uc5d0 \uac78\uccd0 \uc644\uc804\ud55c FEC \ud638\ud658\uc131\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\uc81c\ud488 \uc608\uc2dc<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\uc9c0\uc6d0\ub418\ub294 FEC<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\uc0ac\uc6a9 \uc0ac\ub840<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_self\" href=\"https:\/\/www.l-p.com\/store-26225-25g-sfp28-page2.htm?ca=1469&amp;cv=8172\">25G SFP28 SR<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\ub2e8\uac70\ub9ac \ub370\uc774\ud130\uc13c\ud130 \ub9c1\ud06c<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/473140.htm\">100G QSFP28 CWDM4<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>RS(528,514) \/ \uc120\ud0dd \uc0ac\uc591 KP4<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2km PAM4<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm\">400G OSFP DR4<\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>KP4-FEC(RS(544,514))<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>500m~2km PAM4 \ub9c1\ud06c<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ubaa8\ub4e0 \ubaa8\ub4c8\uc740 \uc0c1\ud638 \uc6b4\uc6a9\uc131, FEC \ub0b4\uc131 \ubc0f \ubb3c\ub9ac\uc801\u00b7\uc804\uae30\uc801 \uc778\ud130\ud398\uc774\uc2a4 \uc0ac\uc591 \uc900\uc218 \uc5ec\ubd80\ub97c \ud14c\uc2a4\ud2b8\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2753 \uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q1: FEC\ub294 \ud2b8\ub79c\uc2dc\ubc84\uc5d0\uc11c \ucc98\ub9ac\ub418\ub098\uc694, \uc544\ub2c8\uba74 \ud638\uc2a4\ud2b8\uc5d0\uc11c \ucc98\ub9ac\ub418\ub098\uc694?<\/strong><br\/>A: FEC\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ud638\uc2a4\ud2b8 \uc7a5\uce58(\uc608: \uc2a4\uc704\uce58 MAC\/<a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/what-is-phy-physical-layer-basics-explained\/\">PHY<\/a>)\uc5d0\uc11c \uad6c\ud604\ub429\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \uad11 \ubaa8\ub4c8\uc5d0\ub294 FEC \ub85c\uc9c1\uc774 \ud3ec\ud568\ub418\uc5b4 \uc788\uc9c0 \uc54a\uc9c0\ub9cc, FEC\uac00 \ud65c\uc131\ud654\ub41c \uc2e0\ud638\uc640 \ud638\ud658\ub418\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q2: \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c FEC\ub97c \ube44\ud65c\uc131\ud654\ud560 \uc218 \uc788\ub098\uc694?<\/strong><br\/>A: \uc0c1\ud669\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4. NRZ \ub9c1\ud06c(\uc608:, <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26192-10g-sfp.htm\">10G SFP+<\/a>)\uc5d0\uc11c\ub294 FEC\uac00 \uc120\ud0dd \uc0ac\ud56d\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 PAM4 \uae30\ubc18 \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \ud45c\uc900\uc0c1 FEC\uac00 \ud544\uc218\uc801\uc774\uba70, \uc774\ub97c \ube44\ud65c\uc131\ud654\ud558\uba74 \ub9c1\ud06c\uac00 \uc791\ub3d9\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 \uacb0\ub860<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">FEC\ub294 \ub354 \uc774\uc0c1 \uc120\ud0dd \uc0ac\ud56d\uc774 \uc544\ub2d9\ub2c8\ub2e4\u2014\ud2b9\ud788 PAM4 \ubc0f \ud14c\ub77c\ube44\ud2b8\uae09 \uc778\ud130\ucee4\ub125\ud2b8\ub85c \ud655\uc7a5\ud568\uc5d0 \ub530\ub77c \uace0\uc18d \uad11 \ud1b5\uc2e0\uc758 \ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud558\uae30 \uc704\ud574 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\ub7ec\ubd84\uc774 <strong>25G<\/strong> \uc774\ub354\ub137\uc744 \ubc30\ud3ec\ud558\ub4e0 <strong>800G<\/strong>, \uc73c\ub85c \ud655\uc7a5\ud558\ub4e0, FEC \uc791\ub3d9 \ubc29\uc2dd\uc744 \uc774\ud574\ud558\uace0 \ud544\uc694\ud55c FEC \ud45c\uc900\uc744 \uc644\uc804\ud788 \uc9c0\uc6d0\ud558\ub294 \ubaa8\ub4c8\uc744 \uc120\ud0dd\ud558\ub294 \uac83\uc774 \uc7a5\uae30\uc801\uc778 \ub124\ud2b8\uc6cc\ud06c \uc548\uc815\uc131, \ud638\ud658\uc131 \ubc0f \uc131\ub2a5\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\ud83d\udd27 <strong>\ubc30\ud3ec \ud301<\/strong>: \ub9c1\ud06c \uc591 \ub05d\ub2e8\uc5d0\uc11c FEC \uc124\uc815\uc744 \ud56d\uc0c1 \uc77c\uad00\ub418\uac8c \ud65c\uc131\ud654\ud558\uac70\ub098 \ube44\ud65c\uc131\ud654\ud558\uc5ec \ubd88\uc77c\uce58 \uc624\ub958\ub97c \ubc29\uc9c0\ud558\uc138\uc694. \ud655\uc2e4\ud558\uc9c0 \uc54a\uc744 \uacbd\uc6b0, \ud2b8\ub79c\uc2dc\ubc84 \ub370\uc774\ud130\uc2dc\ud2b8 \ubc0f \uc2a4\uc704\uce58 \uad6c\uc131 \uac00\uc774\ub4dc\ub97c \ucc38\uc870\ud558\uc138\uc694.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >\ucc38\uace0 \uc790\ub8cc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/glossary\/erbium-doped-fiber-amplifier-optical-networks\/\">\uad11 \ub124\ud2b8\uc6cc\ud06c\uc5d0\uc11c EDFA\uc758 \uc5ed\ud560 \uc774\ud574<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/knowledge-center\/how-optical-transceivers-transmit-data\/\">\uad11 \ud2b8\ub79c\uc2dc\ubc84\ub97c \uc0ac\uc6a9\ud55c \ub370\uc774\ud130 \uc804\uc1a1 \uacfc\uc815<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/knowledge-center\/filter-fwdm-optical-networks-applications\/\">FWDM \ud544\ud130 \ud0d0\uc0c9 \ubc0f \uad11 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/knowledge-center\/optical-transceivers-vs-fiber-converters\/\">\uad11 \ud2b8\ub79c\uc2dc\ubc84\uc640 \uad11\uc12c\uc720 \ubbf8\ub514\uc5b4 \ucee8\ubc84\ud130 \ube44\uad50<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/ko\/knowledge-center\/common-fiber-connector-types-optical-transceivers\/\">\uad11 \ud2b8\ub79c\uc2dc\ubc84\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \uc778\uae30 \uc788\ub294 \uad11\uc12c\uc720 \ucee4\ub125\ud130 \uc885\ub958<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\uad11 \ud1b5\uc2e0\uc5d0\uc11c FEC(\uc804\ubc29 \uc624\ub958 \uc815\uc815)\ub294 \uc624\ub958\ub97c \ud0d0\uc9c0\ud558\uace0 \uc815\uc815\ud558\uae30 \uc704\ud574 \uc911\ubcf5\uc131\uc744 \ucd94\uac00\ud558\uc5ec \uc2e0\ub8b0\uc131 \ub192\uace0 \uace0\uc18d\uc758 \ub370\uc774\ud130 \uc804\uc1a1\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>","protected":false},"author":1,"featured_media":5576,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-5577","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/5577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/comments?post=5577"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/5577\/revisions"}],"predecessor-version":[{"id":11284,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/posts\/5577\/revisions\/11284"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/media\/5576"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/media?parent=5577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/categories?post=5577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/ko\/wp-json\/wp\/v2\/tags?post=5577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}