{"id":5125,"date":"2025-09-10T00:00:00","date_gmt":"2025-09-10T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/qsfp-40g-fr4-meaning-benefits-network-future-proof\/"},"modified":"2026-06-22T07:28:49","modified_gmt":"2026-06-22T07:28:49","slug":"qsfp-40g-fr4-meaning-benefits-network-future-proof","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/qsfp-40g-fr4-meaning-benefits-network-future-proof","title":{"rendered":"Gi\u1ea3i th\u00edch QSFP+ 40G FR4: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n c\u1ee7a b\u1ea1n v\u1ec1 quang h\u1ecdc song song 4\u00d710G"},"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\/8e33a45f15b14fecb912b5b290bdc1b4.webp\" alt=\"What is qsfp+ 40g FR4 and why does it matter\" class=\"wp-image-5123\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e33a45f15b14fecb912b5b290bdc1b4.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e33a45f15b14fecb912b5b290bdc1b4-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e33a45f15b14fecb912b5b290bdc1b4-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e33a45f15b14fecb912b5b290bdc1b4-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/8e33a45f15b14fecb912b5b290bdc1b4-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Trong th\u1ebf gi\u1edbi t\u1ed1c \u0111\u1ed9 cao c\u1ee7a c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p, nhu c\u1ea7u v\u1ec1 b\u0103ng th\u00f4ng ng\u00e0y c\u00e0ng t\u0103ng. Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t quang ph\u00f9 h\u1ee3p l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng, hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed. Trong s\u1ed1 c\u00e1c l\u1ef1a ch\u1ecdn s\u1eb5n c\u00f3, b\u1ed9<br> <strong>QSFP+ 40G FR4<br><\/strong> n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t gi\u1ea3i ph\u00e1p tr\u1ecdng y\u1ebfu nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i 40G.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng ch\u00ednh x\u00e1c th\u00ec n\u00f3 l\u00e0 g\u00ec, v\u00e0 t\u1ea1i sao l\u1ea1i quan tr\u1ecdng \u0111\u1ebfn v\u1eady? H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y s\u1ebd ph\u00e2n t\u00edch chi ti\u1ebft c\u00f4ng ngh\u1ec7, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 \u01b0u \u0111i\u1ec3m c\u1ee7a b\u1ed9<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482435.htm\"><strong>thu ph\u00e1t QSFP+ 40G FR4<br><\/strong><\/a>, \u2014 th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu cho c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i<br> <strong>Ethernet 40G<\/strong> v\u00e0 k\u00eanh s\u1ee3i quang.<br>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f Gi\u1ea3i m\u00e3 t\u00ean g\u1ecdi: QSFP+ 40G FR4<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c gi\u1ea3i m\u00e3 ch\u00ednh t\u00ean g\u1ecdi n\u00e0y, v\u00ec n\u00f3 ph\u1ea3n \u00e1nh c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ed1t l\u00f5i:<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>QSFP+<\/strong>: \u0110\u1ee9ng cho<br> <strong>\u0110a k\u00eanh (Q) d\u1ea1ng nh\u1ecf c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng n\u00e2ng cao (Small Form-factor Pluggable Plus)<br><\/strong>. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a \u0111\u00e2y l\u00e0 m\u1ed9t m\u00f4-\u0111un nh\u1ecf g\u1ecdn, c\u00f3 th\u1ec3 c\u1eafm n\u00f3ng, h\u1ed7 tr\u1ee3<br> <strong>b\u1ed1n k\u00eanh \u0111\u1ed9c l\u1eadp<br><\/strong> \u0111\u1ec3 truy\u1ec1n v\u00e0 nh\u1eadn d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p c\u1ee7a d\u1ea1ng SFP+, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u1ea1t m\u1eadt \u0111\u1ed9 v\u00e0 t\u1ed1c \u0111\u1ed9 cao h\u01a1n.<br>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Y\u00eau c\u1ea7u c\u00e1p s\u1ee3i quang v\u00e0 c\u00f3 th\u1ec3 \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n, nh\u01b0ng m\u1edf r\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n cho s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1ng trong t\u01b0\u01a1ng lai.<\/strong>: Ch\u1ec9 t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u1ed5ng c\u1ee7a m\u00f4-\u0111un, c\u1ee5 th\u1ec3 l\u00e0<br> <strong>40 Gigabit m\u1ed7i gi\u00e2y<br><\/strong>. V\u1edbi b\u1ed1n k\u00eanh, m\u1ed7i k\u00eanh ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 10 Gbps.<br>.<\/p><\/li><li><p style=\"margin: 0px 0px 8px;\"><strong>FR<\/strong>: \u0110\u1ee9ng cho<br> <strong>\u0110a b\u01b0\u1edbc s\u00f3ng ph\u00e2n chia theo d\u1ea3i r\u1ed9ng (Coarse Wavelength Division Multiplexing \u2013 CWDM) g\u1ed3m 4 b\u01b0\u1edbc s\u00f3ng<br> <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-cwdm-understanding-coarse-wavelength-division-multiplexing\/\"><strong>(CWDM)<\/strong><\/a>. N\u00f3 s\u1eed d\u1ee5ng b\u1ed1n t\u00edn hi\u1ec7u laser ri\u00eang bi\u1ec7t t\u1ea1i c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u1ee5 th\u1ec3 (1271 nm, 1291 nm, 1311 nm v\u00e0 1331 nm), truy\u1ec1n qua m\u1ed9t<br><strong> s\u1ee3i quang \u0111\u01a1n mode <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-single-mode-fiber-and-how-does-it-work\/\"><strong>(SMF)<br><\/strong><\/a>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>4<\/strong>: \u0110\u1ea1i di\u1ec7n cho<br> <strong>4 k\u00eanh<br><\/strong> 10G, \u0111\u01b0\u1ee3c gh\u00e9p k\u00eanh \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t li\u00ean k\u1ebft 40G duy nh\u1ea5t.<br>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 thu ph\u00e1t QSFP+ 40G FR4 l\u00e0 g\u00ec?<br><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ed quy\u1ebft c\u1ee7a FR4 n\u1eb1m \u1edf vi\u1ec7c \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 CWDM. C\u1ea7n l\u01b0u \u00fd r\u1eb1ng m\u1ed9t<br> <strong>m\u00f4-\u0111un QSFP+ 40G FR4 \u0111\u01a1n l\u1ebb ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng theo m\u1ed9t chi\u1ec1u<br><\/strong>\u2014 ho\u1eb7c ch\u1ec9 truy\u1ec1n ho\u1eb7c ch\u1ec9 nh\u1eadn t\u00edn hi\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c gh\u00e9p k\u00eanh. M\u1ed9t li\u00ean k\u1ebft ho\u00e0n ch\u1ec9nh y\u00eau c\u1ea7u hai m\u00f4-\u0111un: m\u1ed9t \u1edf m\u1ed7i \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng c\u00e1p quang.<br>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh giao ti\u1ebfp gi\u1eefa hai b\u1ed9 chuy\u1ec3n m\u1ea1ch:<br><\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px 0px 8px;\"><strong>T\u1ea1i \u0111\u1ea7u truy\u1ec1n (B\u1ed9 chuy\u1ec3n m\u1ea1ch A):<br><\/strong><\/p><ul><li><p style=\"margin: 0px;\">B\u1ed9 thu ph\u00e1t (<br><strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482435.htm\"><strong>LQ-CW40-FR4C<\/strong><\/a>) nh\u1eadn b\u1ed1n lu\u1ed3ng \u0111i\u1ec7n 10G t\u1eeb B\u1ed9 chuy\u1ec3n m\u1ea1ch A.<br>.<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ed1n<br> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/dfb-laser-definition\/\"><strong>laser ph\u1ea3n h\u1ed3i ph\u00e2n b\u1ed1 (DFB) ri\u00eang bi\u1ec7t<br><\/strong><\/a> chuy\u1ec3n \u0111\u1ed5i t\u1eebng t\u00edn hi\u1ec7u \u0111i\u1ec7n th\u00e0nh m\u1ed9t b\u01b0\u1edbc s\u00f3ng quang h\u1ecdc c\u1ee5 th\u1ec3 (1271 nm, 1291 nm, 1311 nm, 1331 nm).<\/p><\/li><li><p style=\"margin: 0px;\">M\u1ed9t b\u1ed9 gh\u00e9p k\u00eanh t\u00edch h\u1ee3p (MUX) k\u1ebft h\u1ee3p b\u1ed1n t\u00edn hi\u1ec7u quang n\u00e0y v\u00e0o m\u1ed9t s\u1ee3i c\u00e1p quang \u0111\u01a1n mode (SMF) duy nh\u1ea5t \u0111\u1ec3 truy\u1ec1n \u0111i.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 8px;\"><strong>Truy\u1ec1n d\u1eabn qua c\u00e1p quang:<\/strong><\/p><ul><li><p style=\"margin: 0px;\">T\u00edn hi\u1ec7u CWDM k\u1ebft h\u1ee3p truy\u1ec1n \u0111i tr\u00ean c\u00e1p quang s\u1ee3i \u0111\u01a1n mode (s\u1ee3i ph\u00e1t).<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 8px;\"><strong>\u1ede \u0111\u1ea7u thu (Switch B):<\/strong><\/p><ul><li><p style=\"margin: 0px;\">M\u1ed9t <strong>LINK-PP LQ-CW40-FR4C<\/strong> m\u00f4-\u0111un nh\u1eadn t\u00edn hi\u1ec7u k\u1ebft h\u1ee3p tr\u00ean m\u1ed9t s\u1ee3i c\u00e1p quang ri\u00eang bi\u1ec7t.<\/p><\/li><li><p style=\"margin: 0px;\">M\u1ed9t b\u1ed9 t\u00e1ch k\u00eanh t\u00edch h\u1ee3p (DEMUX) t\u00e1ch b\u1ed1n b\u01b0\u1edbc s\u00f3ng \u0111\u1ea7u v\u00e0o.<\/p><\/li><li><p style=\"margin: 0px;\">C\u00e1c \u0111\u1ea7u d\u00f2 quang chuy\u1ec3n \u0111\u1ed5i t\u1eebng b\u01b0\u1edbc s\u00f3ng quang tr\u1edf l\u1ea1i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n, cung c\u1ea5p b\u1ed1n k\u00eanh 10G cho Switch B.<\/p><\/li><\/ul><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra theo chi\u1ec1u ng\u01b0\u1ee3c l\u1ea1i khi truy\u1ec1n th\u00f4ng t\u1eeb Switch B sang Switch A, \u0111\u00f2i h\u1ecfi m\u1ed9t c\u1eb7p s\u1ee3i c\u00e1p quang th\u1ee9 hai. Do \u0111\u00f3, m\u1ed9t li\u00ean k\u1ebft 40G <strong>duplex y\u00eau c\u1ea7u hai s\u1ee3i c\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong> (m\u1ed9t s\u1ee3i cho Tx\/Rx v\u00e0 m\u1ed9t s\u1ee3i cho Rx\/Tx).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f B\u1ea3ng so s\u00e1nh nhanh QSFP+ 40G FR4 v\u00e0 SR4<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 quang ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i c\u00e1p quang v\u00e0 y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch c\u1ee7a b\u1ea1n. \u0110\u1ed1i th\u1ee7 c\u1ea1nh tranh ch\u00ednh c\u1ee7a FR4 l\u00e0 <strong>QSFP+ 40G SR4<br><\/strong>, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1p quang \u0111a mode.<\/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>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482435.htm\"><strong>QSFP+ 40G FR4<br><\/strong><\/a><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482749.htm\"><strong>QSFP+ 40G SR4<br><\/strong><\/a><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00e1p quang \u0111\u01a1n mode (SMF)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u00e1p quang \u0111a mode (MMF \u2013 OM3\/OM4)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>10km, 20km, 40km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a <strong>2 kil\u00f4m\u00e9t<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed1i \u0111a 100 m (OM3) \/ 150 m (OM4)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng ngh\u1ec7<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>CWDM (4 b\u01b0\u1edbc s\u00f3ng tr\u00ean 1 s\u1ee3i)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Quang h\u1ecdc song song (4 s\u1ee3i \u0111\u1ed9c l\u1eadp)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ea7u n\u1ed1i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea7u n\u1ed1i LC hai chi\u1ec1u (Duplex LC)<br><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ea7u n\u1ed1i MTP\/MPO 12 s\u1ee3i<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft d\u1eef li\u1ec7u t\u1ea7m xa trong trung t\u00e2m d\u1eef li\u1ec7u, DCI<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft t\u1ea7m ng\u1eafn trong c\u00f9ng m\u1ed9t t\u1ee7 ho\u1eb7c khu v\u1ef1c trung t\u00e2m d\u1eef li\u1ec7u<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Chi ph\u00ed c\u00e1p quang<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (SMF)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (MMF)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u1eadt \u0111\u1ed9 c\u00e1p<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Cao<br><\/strong> (Ch\u1ec9 s\u1eed d\u1ee5ng 2 s\u1ee3i tr\u00ean m\u1ed7i li\u00ean k\u1ebft)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (Y\u00eau c\u1ea7u 8 s\u1ee3i tr\u00ean m\u1ed7i li\u00ean k\u1ebft)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110i\u1ec3m ch\u00ednh:<\/strong> S\u1eed d\u1ee5ng <strong>SR4<\/strong> cho c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n ng\u1eafn, ti\u1ebft ki\u1ec7m chi ph\u00ed b\u00ean trong trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n. S\u1eed d\u1ee5ng <strong>FR4<\/strong> khi b\u1ea1n c\u1ea7n ph\u1ee7 s\u00f3ng kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n (l\u00ean \u0111\u1ebfn 2 km) gi\u1eefa c\u00e1c t\u00f2a nh\u00e0 ho\u1eb7c tr\u00ean khu\u00f4n vi\u00ean r\u1ed9ng l\u1edbn, ho\u1eb7c khi b\u1ea1n mu\u1ed1n ti\u1ebft ki\u1ec7m s\u1ed1 l\u01b0\u1ee3ng s\u1ee3i c\u00e1p quang qu\u00fd gi\u00e1.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f C\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 l\u1ee3i \u00edch ch\u00ednh c\u1ee7a m\u00f4-\u0111un 40G FR4<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>thu ph\u00e1t QSFP+ 40G FR4<br><\/strong> l\u00e0 gi\u1ea3i ph\u00e1p linh ho\u1ea1t d\u00e0nh cho c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 m\u1ea1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>K\u1ebft n\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u (DCI):<\/strong> Ho\u00e0n h\u1ea3o \u0111\u1ec3 k\u1ebft n\u1ed1i hai trung t\u00e2m d\u1eef li\u1ec7u c\u00e1ch nhau t\u1ed1i \u0111a 2 km.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Li\u00ean k\u1ebft switch 40G m\u1eadt \u0111\u1ed9 cao:<\/strong> L\u00fd t\u01b0\u1edfng \u0111\u1ec3 t\u1ea1o c\u00e1c li\u00ean k\u1ebft x\u01b0\u01a1ng s\u1ed1ng t\u1ed1c \u0111\u1ed9 cao gi\u1eefa c\u00e1c switch \u1edf c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau trong c\u00f9ng m\u1ed9t t\u00f2a nh\u00e0 ho\u1eb7c khu\u00f4n vi\u00ean.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u1ed1i \u01b0u h\u00f3a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u00e1p quang:<\/strong> Kh\u1ea3 n\u0103ng truy\u1ec1n 40G ch\u1ec9 tr\u00ean hai s\u1ee3i SMF khi\u1ebfn n\u00f3 c\u1ef1c k\u1ef3 hi\u1ec7u qu\u1ea3, l\u00e0m ch\u1eadm nhu c\u1ea7u tri\u1ec3n khai c\u00e1c tuy\u1ebfn c\u00e1p quang m\u1edbi t\u1ed1n k\u00e9m.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng CWDM:<\/strong> C\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CWDM hi\u1ec7n c\u00f3 \u0111\u1ec3 thi\u1ebft k\u1ebf m\u1ea1ng linh ho\u1ea1t.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f \u0110ang t\u00ecm gi\u1ea3i ph\u00e1p 40G FR4 \u0111\u00e1ng tin c\u1eady? H\u00e3y l\u00e0m quen v\u1edbi LINK-PP<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2.webp\" alt=\"QSFP+ 40G FR4 optical transceiver\" class=\"wp-image-5124\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/7a9b7841c49a4c24b14e5016ad88b1a2-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Khi hi\u1ec7u su\u1ea5t v\u00e0 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c c\u1ee7a m\u1ea1ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t, vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t ch\u1ea5t l\u01b0\u1ee3ng cao, t\u01b0\u01a1ng th\u00edch l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/page\/aboutus.htm\"><strong>LINK-PP<\/strong><\/a> s\u1ea3n xu\u1ea5t m\u1ed9t lo\u1ea1t <strong>tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA<\/strong> b\u1ed9 thu ph\u00e1t quang n\u1ed5i ti\u1ebfng v\u1ec1 \u0111\u1ed9 tin c\u1eady, hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch li\u1ec1n m\u1ea1ch v\u1edbi c\u00e1c switch OEM h\u00e0ng \u0111\u1ea7u t\u1eeb Cisco, Juniper, Arista v\u00e0 nhi\u1ec1u h\u00e3ng kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cho nhu c\u1ea7u <strong>40G QSFP+ FR4<\/strong> nhu c\u1ea7u, ch\u00fang t\u00f4i \u0111\u1ec1 xu\u1ea5t:<br\/><strong>LINK-PP LQ-CW40-FR4C<\/strong><br\/>M\u00f4-\u0111un n\u00e0y \u0111\u01b0\u1ee3c ki\u1ec3m tra nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ea7y \u0111\u1ee7 v\u00e0 \u0111i k\u00e8m b\u1ea3o h\u00e0nh tr\u1ecdn \u0111\u1eddi, mang l\u1ea1i s\u1ef1 an t\u00e2m cho c\u00e1c k\u1ebft n\u1ed1i m\u1ea1ng tr\u1ecdng y\u1ebfu c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&gt; &gt; <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/lq-cw40-fr4c.pdf\"><strong>Kh\u00e1m ph\u00e1 B\u1ea3ng d\u1eef li\u1ec7u LINK-PP LQ-CW40-FR4C<\/strong><\/a><strong> &lt;&lt;<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f K\u1ebft lu\u1eadn<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/482435.htm\"><strong>thu ph\u00e1t QSFP+ 40G FR4<br><\/strong><\/a> l\u00e0 gi\u1ea3i ph\u00e1p tinh vi v\u00e0 hi\u1ec7u qu\u1ea3 cho m\u1ea1ng t\u1ed1c \u0111\u1ed9 cao t\u1ea7m trung. Vi\u1ec7c t\u1eadn d\u1ee5ng th\u00f4ng minh c\u00f4ng ngh\u1ec7 CWDM tr\u00ean c\u00e1p s\u1ee3i quang \u0111\u01a1n ch\u1ebf \u0111\u1ed9 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ec3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/data-center-interconnect-definition-benefits-and-role-of-optical-modules\/\"><strong>k\u1ebft n\u1ed1i gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI)<\/strong><\/a>, t\u1ed1i \u0111a h\u00f3a t\u00e0i nguy\u00ean s\u1ee3i quang hi\u1ec7n c\u00f3 v\u00e0 x\u00e2y d\u1ef1ng x\u01b0\u01a1ng s\u1ed1ng m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 vai tr\u00f2 c\u1ee7a n\u00f3 v\u00e0 so s\u00e1nh v\u1edbi SR4, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t nh\u1eb1m t\u1ed1i \u01b0u h\u00f3a c\u1ea3 hi\u1ec7u su\u1ea5t l\u1eabn chi ph\u00ed cho tri\u1ec3n khai Ethernet 40G c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2699\ufe0f C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >QSFP+ 40G FR4 c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n th\u1ea5y \u201cqsfp+\u201d l\u00e0 m\u1ed9t lo\u1ea1i b\u1ed9 thu ph\u00e1t. \u201c40g\u201d cho bi\u1ebft t\u1ed1c \u0111\u1ed9, t\u1ee9c l\u00e0 40 gigabit m\u1ed7i gi\u00e2y. \u201cfr4\u201d c\u00f3 ngh\u0129a l\u00e0 n\u00f3 s\u1eed d\u1ee5ng b\u1ed1n b\u01b0\u1edbc s\u00f3ng tr\u00ean c\u00e1p quang s\u1ee3i \u0111\u01a1n ch\u1ebf \u0111\u1ed9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o t\u01b0\u01a1ng th\u00edch v\u1edbi QSFP+ 40G FR4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng qsfp+ 40g fr4 tr\u00ean nhi\u1ec1u b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng v\u00e0 m\u00e1y ch\u1ee7. H\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i c\u00f3 c\u1ed5ng QSFP+ \u0111\u1ec1u h\u1ed7 tr\u1ee3 b\u1ed9 thu ph\u00e1t n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Kho\u1ea3ng c\u00e1ch t\u1ed1i \u0111a c\u1ee7a QSFP+ 40G FR4 l\u00e0 bao nhi\u00eau?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb c\u00e1ch nhau t\u1ed1i \u0111a 2 kil\u00f4m\u00e9t. Ph\u1ea1m vi n\u00e0y r\u1ea5t ph\u00f9 h\u1ee3p cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 c\u00e1c t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Lo\u1ea1i c\u00e1p quang n\u00e0o c\u1ea7n d\u00f9ng cho QSFP+ 40G FR4?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n c\u00e1p quang s\u1ee3i \u0111\u01a1n ch\u1ebf \u0111\u1ed9. Lo\u1ea1i c\u00e1p n\u00e0y cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch xa m\u00e0 kh\u00f4ng l\u00e0m suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec khi\u1ebfn QSFP+ 40G FR4 kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c b\u1ed9 thu ph\u00e1t c\u0169 h\u01a1n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 cao h\u01a1n, ph\u1ea1m vi truy\u1ec1n xa h\u01a1n v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n. K\u00edch th\u01b0\u1edbc nh\u1ecf gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m kh\u00f4ng gian v\u00e0 n\u0103ng l\u01b0\u1ee3ng trong c\u00e1c gi\u00e1 \u0111\u1ee1 m\u1ea1ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>QSFP+ 40G FR4 cung c\u1ea5p kh\u1ea3 n\u0103ng truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, t\u1ea7m xa cho c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i, n\u00e2ng cao hi\u1ec7u su\u1ea5t, hi\u1ec7u qu\u1ea3 v\u00e0 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng trong t\u01b0\u01a1ng lai t\u1ea1i c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u.<\/p>","protected":false},"author":1,"featured_media":5123,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[18],"class_list":["post-5125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-40g-qsfp-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=5125"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5125\/revisions"}],"predecessor-version":[{"id":11153,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5125\/revisions\/11153"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5123"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}