{"id":5436,"date":"2025-08-15T00:00:00","date_gmt":"2025-08-15T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/psm4-vs-cwdm4-which-optical-transceiver-for-your-network\/"},"modified":"2026-06-22T08:25:49","modified_gmt":"2026-06-22T08:25:49","slug":"psm4-vs-cwdm4-which-optical-transceiver-for-your-network","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/psm4-vs-cwdm4-which-optical-transceiver-for-your-network","title":{"rendered":"PSM4 so v\u1edbi CWDM4: B\u1ed9 thu ph\u00e1t quang n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi m\u1ea1ng c\u1ee7a b\u1ea1n?"},"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\/c590557b74394246abab9a05766937b9.webp\" alt=\"100G PSM4 VS CWDM4\" class=\"wp-image-5432\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c590557b74394246abab9a05766937b9.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c590557b74394246abab9a05766937b9-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c590557b74394246abab9a05766937b9-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c590557b74394246abab9a05766937b9-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/c590557b74394246abab9a05766937b9-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Nhu c\u1ea7u v\u1ec1 k\u1ebft n\u1ed1i 100G trong trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 m\u1ea1ng doanh nghi\u1ec7p \u0111ang b\u00f9ng n\u1ed5. Vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>(100G QSFP28)<\/strong><\/a> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi hi\u1ec7u n\u0103ng, chi ph\u00ed, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng. Hai ti\u00eau chu\u1ea9n ch\u1ee7 \u0111\u1ea1o <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/multi-source-agreements-optical-transceivers\/\"><strong>MSA<\/strong><\/a> (Th\u1ecfa thu\u1eadn \u0110a ngu\u1ed3n) \u0111\u00e3 xu\u1ea5t hi\u1ec7n: <strong>PSM4 (S\u1ee3i \u0111\u01a1n mode song song, 4 k\u00eanh)<\/strong> and <strong>CWDM4 (Ph\u00e2n chia b\u01b0\u1edbc s\u00f3ng th\u00f4, 4 k\u00eanh)<\/strong>. M\u1eb7c d\u00f9 c\u1ea3 hai \u0111\u1ec1u \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 100G tr\u00ean kho\u1ea3ng c\u00e1ch 2 km b\u1eb1ng s\u1ee3i quang \u0111\u01a1n mode <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>, c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00fd t\u01b0\u1edfng c\u1ee7a ch\u00fang l\u1ea1i kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c b\u1ed9 thu ph\u00e1t quang 100G n\u00e0y l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a m\u1ea1ng trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 gi\u1ea3m chi ph\u00ed li\u00ean k\u1ebft quang h\u1ecdc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd27 PSM4: S\u1ee9c m\u1ea1nh c\u1ee7a t\u00ednh song song<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"618\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda.webp\" alt=\"100G PSM4\" class=\"wp-image-5433\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda-300x155.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda-1024x527.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda-768x396.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/d5d0ec3e0f5746b0baf77854ce154dda-18x9.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">PSM4 (IEEE 802.3bm) \u00e1p d\u1ee5ng c\u00e1ch ti\u1ebfp c\u1eadn song song tr\u1ef1c ti\u1ebfp:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>C\u00f4ng ngh\u1ec7:<\/strong> S\u1eed d\u1ee5ng 4 k\u00eanh quang \u0111\u1ed9c l\u1eadp (m\u1ed7i k\u00eanh \u1edf t\u1ed1c \u0111\u1ed9 <em>B\u01b0\u1edbc s\u00f3ng 1310nm<\/em>).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Quang:<\/strong> Y\u00eau c\u1ea7u <strong>8 s\u1ee3i quang<\/strong> (4 Tx, 4 Rx) \u2013 th\u01b0\u1eddng d\u00f9ng \u0111\u1ea7u n\u1ed1i MPO-12.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng:<\/strong> M\u1ed7i k\u00eanh truy\u1ec1n \u0111\u1ed3ng th\u1eddi d\u1eef li\u1ec7u 25 Gbps tr\u00ean c\u1eb7p s\u1ee3i quang ri\u00eang bi\u1ec7t c\u1ee7a n\u00f3.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u01afu \u0111i\u1ec3m:<\/strong> Thi\u1ebft k\u1ebf quang h\u1ecdc \u0111\u01a1n gi\u1ea3n h\u01a1n, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn chi ph\u00ed linh ki\u1ec7n th\u1ea5p h\u01a1n v\u00e0 c\u00e1ch ly t\u00edn hi\u1ec7u tuy\u1ec7t v\u1eddi.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Ti\u00eau th\u1ee5 s\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang cao h\u01a1n, c\u00e1p c\u1ed3ng k\u1ec1nh h\u01a1n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/strong> Kho\u1ea3ng c\u00e1ch r\u1ea5t ng\u1eafn (\u2264 500 m) trong c\u00f9ng t\u1ee7 ho\u1eb7c c\u00f9ng h\u00e0ng, c\u00e1c t\u00ecnh hu\u1ed1ng k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp m\u1eadt \u0111\u1ed9 cao n\u01a1i s\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang kh\u00f4ng ph\u1ea3i l\u00e0 r\u00e0ng bu\u1ed9c ch\u00ednh. M\u1ed9t <strong>m\u00f4-\u0111un quang PSM4<\/strong> nh\u01b0 <strong>LINK-PP LQ-M31100-DR4C<\/strong> mang l\u1ea1i hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh cho nh\u1eefng <strong>\u1ee9ng d\u1ee5ng quang h\u1ecdc song song \u0111\u00f2i h\u1ecfi kh\u1eaft khe n\u00e0y<\/strong>.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf08 CWDM4: Ngh\u1ec7 thu\u1eadt \u0111i\u1ec1u ch\u1ebf b\u01b0\u1edbc s\u00f3ng<\/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\/74256b059b3d45df852aeb13cbeb7f4b.webp\" alt=\"100G CWDM4\" class=\"wp-image-5434\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/74256b059b3d45df852aeb13cbeb7f4b.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/74256b059b3d45df852aeb13cbeb7f4b-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/74256b059b3d45df852aeb13cbeb7f4b-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/74256b059b3d45df852aeb13cbeb7f4b-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/74256b059b3d45df852aeb13cbeb7f4b-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">CWDM4 (Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt MSA) t\u1eadn d\u1ee5ng gh\u00e9p k\u00eanh quang h\u1ecdc \u0111\u1ec3 ti\u1ebft ki\u1ec7m s\u1ee3i quang:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>C\u00f4ng ngh\u1ec7:<\/strong> S\u1eed d\u1ee5ng 4 b\u01b0\u1edbc s\u00f3ng CWDM kh\u00e1c nhau (~1271 nm, 1291 nm, 1311 nm, 1331 nm) \u0111\u01b0\u1ee3c gh\u00e9p k\u00eanh l\u00ean m\u1ed9t <em>single<\/em> c\u1eb7p s\u1ee3i quang.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Quang:<\/strong> Ch\u1ec9 y\u00eau c\u1ea7u <strong>2 s\u1ee3i<\/strong> (1 Tx, 1 Rx) \u2013 th\u01b0\u1eddng d\u00f9ng \u0111\u1ea7u n\u1ed1i LC duplex.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng:<\/strong> B\u1ed9 gh\u00e9p k\u00eanh (Mux) k\u1ebft h\u1ee3p 4 b\u01b0\u1edbc s\u00f3ng l\u00ean s\u1ee3i Tx; b\u1ed9 t\u00e1ch k\u00eanh (Demux) t\u00e1ch ch\u00fang ra \u1edf \u0111\u1ea7u Rx.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>\u01afu \u0111i\u1ec3m:<\/strong> Gi\u1ea3m m\u1ea1nh s\u1ed1 l\u01b0\u1ee3ng s\u1ee3i quang (\u00edt h\u01a1n 4 l\u1ea7n so v\u1edbi PSM4), c\u00e1p nh\u1ecf g\u1ecdn h\u01a1n, qu\u1ea3n l\u00fd c\u00e1p d\u1ec5 d\u00e0ng h\u01a1n, \u0111\u1ea7u n\u1ed1i LC ti\u00eau chu\u1ea9n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong> Y\u00eau c\u1ea7u laser v\u00e0 th\u00e0nh ph\u1ea7n Mux\/Demux ph\u1ee9c t\u1ea1p h\u01a1n (v\u00e0 c\u00f3 th\u1ec3 \u0111\u1eaft h\u01a1n).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho:<\/strong> The <strong>\u201c\u0110i\u1ec3m ng\u1ecdt\u201d cho h\u1ea7u h\u1ebft c\u00e1c li\u00ean k\u1ebft 100G 2 km<\/strong> (v\u00ed d\u1ee5: li\u00ean k\u1ebft n\u1ed9i trung t\u00e2m d\u1eef li\u1ec7u, li\u00ean k\u1ebft khu\u00f4n vi\u00ean). \u0110\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p \u01b0u ti\u00ean cho <strong>hi\u1ec7u qu\u1ea3 s\u1ee3i quang CWDM4 <\/strong> and <strong>k\u1ebft n\u1ed1i 100G hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed<\/strong>. The <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\"><strong>LQ-CW100-FR4C<\/strong><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ed9 tin c\u1eady t\u1ed1i \u0111a trong c\u00e1c m\u1ea1ng gh\u00e9p k\u00eanh b\u01b0\u1edbc s\u00f3ng n\u00e0y.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83e\udd4a \u0110\u1ea5u tr\u1ef1c ti\u1ebfp: PSM4 so v\u1edbi CWDM4 \u2013 Nh\u1eefng kh\u00e1c bi\u1ec7t then ch\u1ed1t<\/strong><\/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;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1eb7c t\u00ednh<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>PSM4 (100G-PSM4)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>CWDM4 (100G-CWDM4)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u00ean chi\u1ebfn th\u1eafng cho\u2026<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng ngh\u1ec7<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 k\u00eanh song song \u1edf b\u01b0\u1edbc s\u00f3ng 1310 nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4 k\u00eanh WDM (1271\/1291\/1311\/1331 nm)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 \u0111\u01a1n gi\u1ea3n (PSM4) \/ Hi\u1ec7u qu\u1ea3 s\u1ee3i quang (CWDM4)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>S\u1ed1 s\u1ee3i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>8 s\u1ee3i quang<\/strong> (MPO-12)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>2 s\u1ee3i quang<\/strong> (LC Duplex)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>CWDM4<\/strong> (Ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>10km, 20km, 40km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 500 m (t\u1ed1i \u01b0u), 2 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>L\u00ean \u0111\u1ebfn 2 km (chu\u1ea9n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u00f2a (C\u1ea3 hai \u0111\u1ec1u \u0111\u1ea1t 2 km; PSM4 t\u1ed1t h\u01a1n \u1edf kho\u1ea3ng c\u00e1ch \u2264500 m)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ea7u n\u1ed1i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>MPO-12\/APC<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LC Duplex<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>CWDM4<\/strong> (Chu\u1ea9n, qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng h\u01a1n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a laser<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u01a1n gi\u1ea3n h\u01a1n (4\u00d7 c\u00f9ng b\u01b0\u1edbc s\u00f3ng \u03bb)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ee9c t\u1ea1p h\u01a1n (4\u00d7 b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau, b\u1ed9 gh\u00e9p\/kh\u1eed gh\u00e9p)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>PSM4<\/strong> (Chi ph\u00ed ti\u1ec1m n\u0103ng th\u1ea5p h\u01a1n)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 d\u00e0y c\u00e1p<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (c\u00e1p d\u00e0y h\u01a1n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p h\u01a1n (c\u00e1p m\u1ecfng h\u01a1n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>CWDM4<\/strong><\/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>T\u1ea7m ng\u1eafn, m\u1eadt \u0111\u1ed9 cao<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Li\u00ean k\u1ebft n\u1ed9i b\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u (ICI) v\u00e0 li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) chu\u1ea9n 2 km<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ee5 thu\u1ed9c v\u00e0o kho\u1ea3ng c\u00e1ch\/v\u1ea5n \u0111\u1ec1 s\u1ee3i quang<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Y\u1ebfu t\u1ed1 chi ph\u00ed (th\u00e0nh ph\u1ea7n)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Laser ti\u1ec1m n\u0103ng r\u1ebb h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Laser + b\u1ed9 gh\u00e9p\/kh\u1eed gh\u00e9p ti\u1ec1m n\u0103ng \u0111\u1eaft h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ed1i c\u1ea3nh<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Y\u1ebfu t\u1ed1 chi ph\u00ed (h\u1ea1 t\u1ea7ng)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Cao h\u01a1n (nhi\u1ec1u s\u1ee3i quang\/c\u00e1p h\u01a1n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Lower<\/strong> (\u00cdt s\u1ee3i quang\/c\u00e1p h\u01a1n)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>CWDM4<\/strong> (Chi ph\u00ed h\u1ea1 t\u1ea7ng t\u1ed5ng th\u1ec3)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udfc6 L\u1ef1a ch\u1ecdn \u201cchi\u1ebfn binh\u201d c\u1ee7a b\u1ea1n: PSM4 hay CWDM4?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px 0px 4px;\"><strong>Ch\u1ecdn PSM4 n\u1ebfu:<\/strong><\/p><ul><li><p style=\"margin: 0px;\">C\u00e1c k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n l\u00e0 <strong>r\u1ea5t ng\u1eafn (\u2264 500 m)<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>H\u1ea1 t\u1ea7ng s\u1ee3i quang d\u1ed3i d\u00e0o v\u00e0 r\u1ebb<\/strong>, v\u00e0 \u0111\u1ed9 d\u00e0y c\u00e1p kh\u00f4ng ph\u1ea3i v\u1ea5n \u0111\u1ec1 l\u1edbn.<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ea1n \u01b0u ti\u00ean <strong>ti\u1ebft ki\u1ec7m chi ph\u00ed th\u00e0nh ph\u1ea7n ti\u1ec1m n\u0103ng<\/strong> h\u01a1n l\u00e0 hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng s\u1ee3i quang <em>cho c\u00e1c tri\u1ec3n khai t\u1ea7m ng\u1eafn c\u1ee5 th\u1ec3<\/em>.<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ea1n c\u1ea7n <strong>quang h\u1ecdc song song m\u1eadt \u0111\u1ed9 cao<\/strong> trong kh\u00f4ng gian h\u1ea1n ch\u1ebf.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>Ch\u1ecdn CWDM4 n\u1ebfu (l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1ea5t):<\/strong><\/p><ul><li><p style=\"margin: 0px;\">C\u00e1c k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n l\u00e0 <strong>l\u00ean \u0111\u1ebfn 2 km<\/strong>.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ti\u1ebft ki\u1ec7m s\u1ee3i quang l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t<\/strong> (gi\u00fap ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3 chi ph\u00ed v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Qu\u1ea3n l\u00fd c\u00e1p d\u1ec5 d\u00e0ng h\u01a1n<\/strong> K\u1ebft n\u1ed1i b\u1eb1ng \u0111\u1ea7u n\u1ed1i LC duplex \u0111\u01b0\u1ee3c \u01b0u ti\u00ean.<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ea1n c\u1ea7n m\u1ed9t <strong>gi\u1ea3i ph\u00e1p chu\u1ea9n, t\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i<\/strong> cho li\u00ean k\u1ebft gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u (DCI) ho\u1eb7c li\u00ean k\u1ebft backbone doanh nghi\u1ec7p.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Chi ph\u00ed h\u1ea1 t\u1ea7ng t\u1ed5ng th\u1ec3<\/strong> (s\u1ee3i quang + c\u00e1p + qu\u1ea3n l\u00fd) l\u00e0 y\u1ebfu t\u1ed1 th\u00fac \u0111\u1ea9y ch\u00ednh.<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udca1 Gi\u1ea3i ph\u00e1p LINK-PP: \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00ec hi\u1ec7u n\u0103ng v\u00e0 gi\u00e1 tr\u1ecb<\/strong><br\/>D\u00f9 thi\u1ebft k\u1ebf m\u1ea1ng 100G c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u hi\u1ec7u qu\u1ea3 song song <strong>PSM4<\/strong> hay kh\u1ea3 n\u0103ng gh\u00e9p k\u00eanh b\u01b0\u1edbc s\u00f3ng m\u1ea1nh m\u1ebd c\u1ee7a <strong>CWDM4<\/strong>,<a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong> LINK-PP<\/strong><\/a> LINK-PP cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u su\u1ea5t cao, tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n MSA:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>Cho \u1ee9ng d\u1ee5ng song song \u0111\u00f2i h\u1ecfi cao \u1edf t\u1ea7m ng\u1eafn:<\/strong> The <strong>B\u1ed9 thu ph\u00e1t LINK-PP PSM4<\/strong> mang l\u1ea1i hi\u1ec7u n\u0103ng \u1ed5n \u0111\u1ecbnh cho c\u00e1c gi\u1ea3i ph\u00e1p quang h\u1ecdc 100G ti\u1ebft ki\u1ec7m chi ph\u00ed trong c\u00e1c \u1ee9ng d\u1ee5ng m\u1eadt \u0111\u1ed9 cao, kho\u1ea3ng c\u00e1ch ng\u1eafn.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Cho li\u00ean k\u1ebft hi\u1ec7u qu\u1ea3 \u1edf kho\u1ea3ng c\u00e1ch 2 km:<\/strong> <strong>LINK-PP<\/strong> B\u1ed9 thu ph\u00e1t CWDM4 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472577.htm\"><strong>100G<br><\/strong> <strong>LINK-PP cung c\u1ea5p \u0111\u1ed9 tin c\u1eady cao, ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p<\/strong><\/a> \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c gi\u1ea3i ph\u00e1p trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn v\u00e0 m\u1ea1ng doanh nghi\u1ec7p b\u0103ng th\u00f4ng cao.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea3 hai module \u0111\u1ec1u tr\u1ea3i qua qu\u00e1 tr\u00ecnh ki\u1ec3m tra nghi\u00eam ng\u1eb7t <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, \u0111\u1ed9 tr\u1ec5 th\u1ea5p <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>T\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/strong><\/a>, v\u00e0 tu\u1ed5i th\u1ecd d\u00e0i, gi\u00fap b\u1ea1n y\u00ean t\u00e2m v\u1ec1 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng quang c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2705 K\u1ebft lu\u1eadn: T\u1ed1i \u01b0u h\u00f3a \u0110\u01b0\u1eddng bi\u00ean Quang c\u1ee7a B\u1ea1n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec3u r\u00f5 <strong>s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa PSM4 v\u00e0 CWDM4<\/strong> l\u00e0 \u0111i\u1ec1u c\u01a1 b\u1ea3n \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn <strong>b\u1ed9 thu ph\u00e1t 100G m\u1ed9t c\u00e1ch c\u00f3 th\u00f4ng tin<\/strong>. Trong khi PSM4 mang l\u1ea1i t\u00ednh \u0111\u01a1n gi\u1ea3n cho c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n song song si\u00eau ng\u1eafn, <strong>CWDM4 \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ed1ng tr\u1ecb cho c\u00e1c li\u00ean k\u1ebft 100G \u1edf kho\u1ea3ng c\u00e1ch 2 km nh\u1edd hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng s\u1ee3i quang v\u01b0\u1ee3t tr\u1ed9i, d\u1ec5 qu\u1ea3n l\u00fd h\u01a1n v\u00e0 chi ph\u00ed c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng t\u1ed5ng th\u1ec3 th\u1ea5p h\u01a1n.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c tri\u1ec3n khai 100G c\u1ee7a b\u1ea1n v\u1edbi gi\u1ea3i ph\u00e1p quang ph\u00f9 h\u1ee3p? \ud83d\udd17<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\ud83d\udc49 Kh\u00e1m ph\u00e1 to\u00e0n b\u1ed9 d\u00f2ng s\u1ea3n ph\u1ea9m module QSFP28 100G hi\u1ec7u su\u1ea5t cao v\u00e0 \u0111\u00e1ng tin c\u1eady c\u1ee7a LINK-PP, bao g\u1ed3m c\u00e1c b\u1ed9 thu ph\u00e1t CWDM4 v\u00e0 PSM4 d\u1eabn \u0111\u1ea7u ng\u00e0nh, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m mang l\u1ea1i gi\u00e1 tr\u1ecb t\u1ed1i \u0111a v\u00e0 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c cho c\u00e1c li\u00ean k\u1ebft quan tr\u1ecdng c\u1ee7a b\u1ea1n. <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27045-100g-qsfp28-sfp-dd.htm\"><strong>Truy c\u1eadp trang s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u279e<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcdd FAQ<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa PSM4 v\u00e0 CWDM4 l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PSM4 c\u1ea7n t\u00e1m s\u1ee3i c\u00e1p quang v\u00e0 s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ea7u n\u1ed1i MPO\/MTP. N\u00f3 truy\u1ec1n d\u1eef li\u1ec7u theo c\u00e1ch song song. CWDM4 ch\u1ec9 c\u1ea7n hai s\u1ee3i c\u00e1p quang v\u00e0 s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ea7u n\u1ed1i LC duplex. N\u00f3 truy\u1ec1n d\u1eef li\u1ec7u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c b\u01b0\u1edbc s\u00f3ng kh\u00e1c nhau.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>PSM4 ph\u00f9 h\u1ee3p cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn. CWDM4 th\u00edch h\u1ee3p h\u01a1n cho c\u00e1c kho\u1ea3ng c\u00e1ch d\u00e0i h\u01a1n.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ed9 thu ph\u00e1t n\u00e0o d\u1ec5 l\u1eafp \u0111\u1eb7t h\u01a1n trong c\u00e1c m\u1ea1ng hi\u1ec7n c\u00f3?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CWDM4 th\u01b0\u1eddng d\u1ec5 l\u1eafp \u0111\u1eb7t h\u01a1n. Ph\u1ea7n l\u1edbn c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u00e3 s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i LC v\u00e0 c\u00e1p hai s\u1ee3i.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>PSM4 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1p quang song song m\u1edbi n\u1ebfu b\u1ea1n ch\u01b0a c\u00f3 lo\u1ea1i c\u00e1p n\u00e0y.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Gi\u1ea3i ph\u00e1p n\u00e0o ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n cho c\u00e1c kho\u1ea3ng c\u00e1ch ng\u1eafn?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PSM4 th\u01b0\u1eddng c\u00f3 chi ph\u00ed th\u1ea5p h\u01a1n cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn n\u1ebfu b\u1ea1n \u0111\u00e3 c\u00f3 c\u00e1p quang song song.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>CWDM4 c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed c\u00e1p cho c\u00e1c m\u1ea1ng m\u1edbi ho\u1eb7c m\u1edf r\u1ed9ng.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >C\u1ea3 PSM4 v\u00e0 CWDM4 \u0111\u1ec1u c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 n\u00e2ng c\u1ea5p m\u1ea1ng trong t\u01b0\u01a1ng lai kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CWDM4 ph\u00f9 h\u1ee3p h\u01a1n cho vi\u1ec7c n\u00e2ng c\u1ea5p. N\u00f3 s\u1eed d\u1ee5ng \u00edt s\u1ee3i c\u00e1p quang h\u01a1n, n\u00ean vi\u1ec7c b\u1ed5 sung th\u00eam l\u00e0 r\u1ea5t d\u1ec5 d\u00e0ng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>PSM4 c\u00f3 th\u1ec3 chi\u1ebfm nhi\u1ec1u kh\u00f4ng gian h\u01a1n khi m\u1ea1ng c\u1ee7a b\u1ea1n m\u1edf r\u1ed9ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >Trung t\u00e2m d\u1eef li\u1ec7u n\u00ean ch\u1ecdn b\u1ed9 thu ph\u00e1t n\u00e0o cho c\u00e1c k\u1ebft n\u1ed1i d\u00e0i?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trung t\u00e2m d\u1eef li\u1ec7u n\u00ean ch\u1ecdn CWDM4 cho c\u00e1c k\u1ebft n\u1ed1i l\u00ean \u0111\u1ebfn 2 km.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>PSM4 l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t cho c\u00e1c k\u1ebft n\u1ed1i ng\u1eafn b\u00ean trong t\u00f2a nh\u00e0.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh PSM4 v\u00e0 CWDM4 \u0111\u1ec3 l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t quang 100G ph\u00f9 h\u1ee3p cho m\u1ea1ng c\u1ee7a b\u1ea1n d\u1ef1a tr\u00ean kho\u1ea3ng c\u00e1ch, c\u00e1p, chi ph\u00ed v\u00e0 nhu c\u1ea7u n\u00e2ng c\u1ea5p.<\/p>","protected":false},"author":1,"featured_media":5435,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[13],"class_list":["post-5436","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-100g-modules"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5436","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=5436"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5436\/revisions"}],"predecessor-version":[{"id":11253,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5436\/revisions\/11253"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5435"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}