{"id":5535,"date":"2025-08-04T00:00:00","date_gmt":"2025-08-04T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/how-to-test-transmitted-power-of-optical-modules-guide\/"},"modified":"2026-06-22T09:14:27","modified_gmt":"2026-06-22T09:14:27","slug":"how-to-test-transmitted-power-of-optical-modules-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/how-to-test-transmitted-power-of-optical-modules-guide","title":{"rendered":"C\u00e1ch ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t c\u1ee7a m\u00f4-\u0111un quang"},"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\/acd74de76ce04f808298521a26b93091.webp\" alt=\"How to test transmitted power of optical modules\" class=\"wp-image-5532\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/acd74de76ce04f808298521a26b93091.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/acd74de76ce04f808298521a26b93091-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/acd74de76ce04f808298521a26b93091-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/acd74de76ce04f808298521a26b93091-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/acd74de76ce04f808298521a26b93091-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t \u0111i trong m\u00f4-\u0111un SFP <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>module quang<br><\/strong><\/a>, b\u1ea1n s\u1eed d\u1ee5ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c. Nhi\u1ec1u m\u00f4-\u0111un SFP c\u0169ng c\u00f3 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers\/\"><strong>DOM\/DDM<\/strong><\/a>, cho ph\u00e9p b\u1ea1n xem d\u1eef li\u1ec7u gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 tr\u00ean thi\u1ebft b\u1ecb m\u1ea1ng. Vi\u1ec7c l\u1ea5y \u0111\u00fang gi\u00e1 tr\u1ecb \u0111o c\u00f4ng su\u1ea5t ph\u00e1t \u0111i gi\u00fap m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean gi\u00fap b\u1ea1n duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng v\u00e0 ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 s\u1edbm. C\u00e1c m\u00f4-\u0111un SFP c\u00f3 t\u00ednh n\u0103ng ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t \u0111i h\u1ed7 tr\u1ee3 b\u1ea1n tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 gi\u1eef k\u1ebft n\u1ed1i lu\u00f4n t\u1ed1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u2726 Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>S\u1eed d\u1ee5ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang ho\u1eb7c t\u00ednh n\u0103ng DOM \u0111\u1ec3 ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t. \u0110i\u1ec1u n\u00e0y gi\u00fap m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/p><\/li><li><p>Lu\u00f4n ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t tr\u01b0\u1edbc ti\u00ean tr\u01b0\u1edbc khi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1. Vi\u1ec7c n\u00e0y ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n v\u1ea5n \u0111\u1ec1 nhanh h\u01a1n.<\/p><\/li><li><p>\u0110eo k\u00ednh b\u1ea3o h\u1ed9 m\u1eaft v\u00e0 kh\u00f4ng nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea7u s\u1ee3i quang. \u0110i\u1ec1u n\u00e0y b\u1ea3o v\u1ec7 m\u1eaft b\u1ea1n kh\u1ecfi \u00e1nh s\u00e1ng laser.<\/p><\/li><li><p>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang v\u00e0 s\u1eed d\u1ee5ng \u0111\u00fang c\u00f4ng c\u1ee5. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb \u0111o c\u00f4ng su\u1ea5t ch\u00ednh x\u00e1c v\u00e0 ng\u0103n m\u1ea5t t\u00edn hi\u1ec7u.<\/p><\/li><li><p>Ki\u1ec3m tra c\u00e1c m\u00f4-\u0111un quang th\u01b0\u1eddng xuy\u00ean v\u00e0 so s\u00e1nh k\u1ebft qu\u1ea3 v\u1edbi b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (datasheet). \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n s\u1edbm s\u1ef1 c\u1ed1 v\u00e0 duy tr\u00ec \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cho m\u1ea1ng.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 V\u00ec sao vi\u1ec7c ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t (Tx) l\u00e0 b\u1eaft bu\u1ed9c<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng su\u1ea5t ph\u00e1t quang (Tx)<\/strong> \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u v\u00e0 ph\u1ea1m vi ph\u1ee7 s\u00f3ng m\u1ea1ng. \u0110\u1ed9 l\u1ec7ch v\u01b0\u1ee3t qu\u00e1 \u00b13dB c\u00f3 th\u1ec3 g\u00e2y ra <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/understanding-what-is-bit-error-rate\/\"><strong>BER<\/strong><\/a> c\u00e1c \u0111\u1ec9nh xung ho\u1eb7c h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb. Theo ti\u00eau chu\u1ea9n IEEE 802.3, vi\u1ec7c x\u00e1c minh \u0111\u1ecbnh k\u1ef3 c\u00f4ng su\u1ea5t ph\u00e1t (Tx) ng\u0103n ng\u1eeba:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>S\u1ef1 c\u1ed1 li\u00ean k\u1ebft (link failures)<\/strong> t\u00edn hi\u1ec7u thi\u1ebfu c\u00f4ng su\u1ea5t<\/p><\/li><li><p style=\"margin: 0px;\"><strong>h\u01b0 h\u1ecfng b\u1ed9 thu<\/strong> do truy\u1ec1n d\u1eabn qu\u00e1 c\u00f4ng su\u1ea5t<\/p><\/li><li><p style=\"margin: 0px;\"><strong>th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ed1n k\u00e9m<\/strong> trong qu\u00e1 tr\u00ecnh ch\u1ea9n \u0111o\u00e1n s\u1ef1 c\u1ed1<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><em>M\u1eb9o chuy\u00ean gia: 68% c\u00e1c s\u1ef1 c\u1ed1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng li\u00ean quan \u0111\u1ebfn thi\u1ebft b\u1ecb quang b\u1eaft ngu\u1ed3n t\u1eeb hi\u1ec7n t\u01b0\u1ee3ng tr\u00f4i c\u00f4ng su\u1ea5t ph\u00e1t (Tx) ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >V\u1eabn ch\u01b0a ch\u1eafc ch\u1eafn v\u1ec1 con \u0111\u01b0\u1eddng t\u1ed1t nh\u1ea5t cho tri\u1ec3n khai 100G c\u1ee7a b\u1ea1n? <strong>4 Ph\u01b0\u01a1ng ph\u00e1p chuy\u00ean nghi\u1ec7p \u0111\u1ec3 \u0111o c\u00f4ng su\u1ea5t ph\u00e1t (Tx)<\/strong><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\" >1. <strong>M\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM) \u2013 Ti\u00eau chu\u1ea9n v\u00e0ng<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>\u0110\u1ed9 ch\u00ednh x\u00e1c:<\/strong> \u00b10,2 dB khi hi\u1ec7u chu\u1ea9n<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>Quy tr\u00ecnh:<\/strong><\/p><p><span style=\"color: var(--qc-color8);\">D\u00e2y nh\u1ea3y quang \u2192 C\u1ea3m bi\u1ebfn OPM \u2192 M\u00e1y \u0111o \u0111\u00e3 hi\u1ec7u chu\u1ea9n <\/span> <\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><em>C\u00e1c y\u1ebfu t\u1ed1 then ch\u1ed1t:<\/em><\/p><ul><li><p style=\"margin: 0px;\">Thi\u1ebft l\u1eadp b\u01b0\u1edbc s\u00f3ng (850nm\/1310nm\/1550nm)<\/p><\/li><li><p style=\"margin: 0px;\">\u0110\u1ed9 s\u1ea1ch c\u1ee7a \u0111\u1ea7u n\u1ed1i (S\u1eed d\u1ee5ng b\u1ed9 l\u00e0m s\u1ea1ch LINK-PP LC\/SC)<\/p><\/li><li><p style=\"margin: 0px;\">Kh\u1ea3 n\u0103ng truy xu\u1ea5t hi\u1ec7u chu\u1ea9n theo chu\u1ea9n NIST<\/p><\/li><\/ul><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >2. <strong>M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 quang (OSA) \u2013 D\u00e0nh cho h\u1ec7 th\u1ed1ng \u0111\u1ed3ng pha (coherent)<\/strong><\/h4>\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\/f7cacf57ef4f417197dcbc561d994164.webp\" alt=\"transmit power\" class=\"wp-image-5533\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f7cacf57ef4f417197dcbc561d994164.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f7cacf57ef4f417197dcbc561d994164-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f7cacf57ef4f417197dcbc561d994164-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f7cacf57ef4f417197dcbc561d994164-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f7cacf57ef4f417197dcbc561d994164-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00fd t\u01b0\u1edfng cho <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-27047-10g-cwdm-dwdm-sfp.htm\"><strong>M\u00f4-\u0111un DWDM\/CWDM<\/strong><\/a> ph\u00e2n t\u00edch:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\">\u0110\u1ed9 tr\u00f4i b\u01b0\u1edbc s\u00f3ng trung t\u00e2m<\/p><\/li><li><p style=\"margin: 0px;\">Suy gi\u1ea3m t\u1ef7 s\u1ed1 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u quang (OSNR)<\/p><\/li><li><p style=\"margin: 0px;\">Ph\u00e2n b\u1ed1 c\u00f4ng su\u1ea5t ph\u1ed5<\/p><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" >3. <strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM) \u2013 Tr\u00ed tu\u1ec7 t\u00edch h\u1ee3p s\u1eb5n<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Truy c\u1eadp qua CLI\/SDN:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">show interface transceiver detail  <br\/>C\u00f4ng su\u1ea5t ph\u00e1t (Tx): -1,3dBm (Gi\u00e1 tr\u1ecb danh \u0111\u1ecbnh: -1,0 \u0111\u1ebfn +1,0dBm)  <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>H\u1ea1n ch\u1ebf: \u0110\u1ed9 ch\u00ednh x\u00e1c \u00b13dB so v\u1edbi thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m<\/em><\/p>\n\n\n\n<h4 class=\"wp-block-heading\" >4. <strong>B\u1ed9 ki\u1ec3m tra m\u1ea1ng (v\u00ed d\u1ee5: Viavi\/JDSU)<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">X\u00e1c th\u1ef1c hi\u1ec7u n\u0103ng \u0111\u1ea7u cu\u1ed1i b\u1eb1ng BERT trong khi gi\u00e1m s\u00e1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\">Dao \u0111\u1ed9ng c\u00f4ng su\u1ea5t theo th\u1eddi gian th\u1ef1c<\/p><\/li><li><p style=\"margin: 0px;\">T\u01b0\u01a1ng quan \u0111\u1ed9 m\u00e9o (jitter)<\/p><\/li><li><p style=\"margin: 0px;\">T\u1ef7 l\u1ec7 l\u1ed7i bit (BER) d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n t\u1ea3i cao<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udcca Ph\u1ea1m vi c\u00f4ng su\u1ea5t ph\u00e1t (Tx) theo lo\u1ea1i m\u00f4-\u0111un (tu\u00e2n th\u1ee7 IEEE 802.3)<\/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;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p><strong>Lo\u1ea1i m\u00f4-\u0111un<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>B\u01b0\u1edbc s\u00f3ng<br><\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng su\u1ea5t ph\u00e1t t\u1ed1i thi\u1ec3u<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>C\u00f4ng su\u1ea5t ph\u00e1t t\u1ed1i \u0111a<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed5n hao t\u1ed1i \u0111a cho ph\u00e9p<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\"><strong>SFP-10G-SR<br><\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>850nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>-7,3dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>-1,0dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>2,6dB<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\"><strong>SFP-10G-LR<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>-8,2 dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>+0,5dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>3,2dB<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/472118.htm\"><strong>QSFP28-100G-ER4<\/strong><\/a><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>-4,7dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>+4,0dBm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>4,5dB<\/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 style=\"margin-bottom: 0px;\">\u26a0\ufe0f <em>V\u01b0\u1ee3t qu\u00e1 c\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o t\u1ed1i \u0111a s\u1ebd l\u00e0m h\u1ecfng b\u1ed9 thu! Lu\u00f4n x\u00e1c minh ng\u01b0\u1ee1ng \u0111\u1ed9 nh\u1ea1y \u0111\u1ea7u v\u00e0o (Rx sensitivity).<\/em><\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83d\udd27 Quy tr\u00ecnh ki\u1ec3m tra t\u1eebng b\u01b0\u1edbc<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"margin: 0px 0px 4px;\"><strong>\u2488 Danh s\u00e1ch ki\u1ec3m tra tr\u01b0\u1edbc khi \u0111o<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><span>L\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i b\u1eb1ng LINK-PP OptiClean\u00ae Pro<\/span><\/p><\/li><li><p style=\"margin: 0px;\"><span>Ki\u1ec3m tra ng\u00e0y hi\u1ec7u chu\u1ea9n c\u1ee7a m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang (OPM) (&lt;6 th\u00e1ng)<\/span><\/p><\/li><li><p style=\"margin: 0px;\"><span>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 (khuy\u1ebfn ngh\u1ecb: 23\u00b0C\u00b15\u00b0)<\/span><\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"margin: 0px 0px 4px;\"><strong>\u2489 Quy tr\u00ecnh \u0111o<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"527\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b.webp\" alt=\"transmit power\" class=\"wp-image-5534\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b-300x132.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b-1024x450.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b-768x337.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/6dad7e4f39c1419bb8ec2c1307513d5b-18x8.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"margin: 0px 0px 4px;\"><strong>\u248a X\u1eed l\u00fd s\u1ef1 c\u1ed1 khi gi\u00e1 tr\u1ecb \u0111o ngo\u00e0i gi\u1edbi h\u1ea1n cho ph\u00e9p<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><span><strong>C\u00f4ng su\u1ea5t th\u1ea5p:<\/strong> Ki\u1ec3m tra d\u00f2ng thi\u00ean \u00e1p laser, u\u1ed1n cong s\u1ee3i quang v\u1edbi b\u00e1n k\u00ednh &gt;30mm<\/span><\/p><\/li><li><p style=\"margin: 0px;\"><span><strong>C\u00f4ng su\u1ea5t cao:<\/strong> X\u00e1c minh thi\u1ebft l\u1eadp \u0111o, ki\u1ec3m tra hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e1nh s\u00e1ng<\/span><\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\ud83c\udf21\ufe0f \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u00f4i tr\u01b0\u1eddng l\u00ean c\u00f4ng su\u1ea5t ph\u00e1t (Tx) (ph\u00e2n t\u00edch d\u1eef li\u1ec7u)<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">*Ki\u1ec3m tra 100 chi\u1ebfc m\u00f4-\u0111un <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-26045-400g-qsfp-dd-osfp-qsfp112.htm?ca=1454&amp;cv=8282\"><strong>QSFP-DD-400G c\u1ee7a LINK-PP<\/strong><\/a> \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau:*<\/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><strong>Nhi\u1ec7t \u0111\u1ed9 (\u00b0C)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u1ed9 tr\u00f4i c\u00f4ng su\u1ea5t trung b\u00ecnh<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u00e1nh gi\u00e1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>0<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>+0,8 dB<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50\u2b50<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>25<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>\u00b10,1 dB<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50\u2b50\u2b50\u2b50\u2b50<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p>70<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>-1,2 dB<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2b50\u2b50<\/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 style=\"margin-bottom: 0px;\">\u2705 *C\u00e1c m\u00f4-\u0111un LINK-PP c\u1ea5p c\u00f4ng nghi\u1ec7p (-40\u00b0C \u0111\u1ebfn 85\u00b0C) duy tr\u00ec \u0111\u1ed9 tr\u00f4i &lt;\u00b10,5dB*<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n n\u00ean ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t \u0111i trong c\u00e1c m\u00f4-\u0111un quang bao l\u00e2u m\u1ed9t l\u1ea7n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t khi l\u1eafp \u0111\u1eb7t m\u00f4-\u0111un. Ki\u1ec3m tra l\u1ea1i sau khi s\u1eeda ch\u1eefa ho\u1eb7c thay \u0111\u1ed5i b\u1ea5t k\u1ef3 th\u00e0nh ph\u1ea7n n\u00e0o. Th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh. V\u1edbi c\u00e1c k\u1ebft n\u1ed1i quan tr\u1ecdng, h\u00e3y ki\u1ec3m tra v\u00e0i th\u00e1ng m\u1ed9t l\u1ea7n. Vi\u1ec7c n\u00e0y gi\u00fap b\u1ea1n ph\u00e1t hi\u1ec7n s\u1edbm s\u1ef1 c\u1ed1 v\u00e0 gi\u1eef m\u1ea1ng lu\u00f4n m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Li\u1ec7u b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng b\u1ea5t k\u1ef3 m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang n\u00e0o cho m\u1ecdi m\u00f4-\u0111un SFP kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng, b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t ph\u00f9 h\u1ee3p v\u1edbi b\u01b0\u1edbc s\u00f3ng c\u1ee7a m\u00f4-\u0111un. H\u1ea7u h\u1ebft c\u00e1c m\u00f4-\u0111un s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng 850 nm, 1310 nm ho\u1eb7c 1550 nm. Lu\u00f4n \u0111\u1ecdc b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (datasheet) c\u1ee7a m\u00f4-\u0111un tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh ki\u1ec3m tra.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Vi\u1ec7c c\u00f4ng su\u1ea5t ph\u00e1t qu\u00e1 th\u1ea5p ngh\u0129a l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng su\u1ea5t ph\u00e1t th\u1ea5p c\u00f3 th\u1ec3 do \u0111\u1ea7u n\u1ed1i b\u1ecb b\u1ea9n. C\u0169ng c\u00f3 th\u1ec3 do m\u00f4-\u0111un b\u1ecb h\u1ecfng ho\u1eb7c s\u1ee3i quang b\u1ecb t\u1ed5n th\u01b0\u01a1ng. H\u00e3y l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i, ki\u1ec3m tra m\u00f4-\u0111un v\u00e0 ki\u1ec3m tra s\u1ee3i quang. N\u1ebfu v\u1eabn kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, h\u00e3y thay th\u1ebf m\u00f4-\u0111un.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Li\u1ec7u c\u00f3 an to\u00e0n khi nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea7u s\u1ee3i quang kh\u00f4ng?<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng nh\u00ecn tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea7u s\u1ee3i quang. \u00c1nh s\u00e1ng laser c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n th\u01b0\u01a1ng nghi\u00eam tr\u1ecdng cho m\u1eaft b\u1ea1n. Lu\u00f4n \u0111eo k\u00ednh b\u1ea3o h\u1ed9 v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh an to\u00e0n khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c m\u00f4-\u0111un quang.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Ki\u1ec3m tra c\u00f4ng su\u1ea5t ph\u00e1t c\u1ee7a m\u00f4-\u0111un quang b\u1eb1ng m\u00e1y \u0111o c\u00f4ng su\u1ea5t quang ho\u1eb7c DOM \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u, \u0111\u1ed9 tin c\u1eady m\u1ea1ng v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n.<\/p>","protected":false},"author":1,"featured_media":5532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5535","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5535","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=5535"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5535\/revisions"}],"predecessor-version":[{"id":11423,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5535\/revisions\/11423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5532"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}