{"id":3327,"date":"2025-04-22T11:12:00","date_gmt":"2025-04-22T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/ddm-dom-in-optical-transceivers\/"},"modified":"2026-06-22T09:40:24","modified_gmt":"2026-06-22T09:40:24","slug":"ddm-dom-in-optical-transceivers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/ddm-dom-in-optical-transceivers","title":{"rendered":"T\u00ecm hi\u1ec3u DDM\/DOM: V\u00ec sao gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt s\u1ed1 l\u1ea1i quan tr\u1ecdng \u0111\u1ed1i v\u1edbi b\u1ed9 thu ph\u00e1t quang"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107.webp\" alt=\"DDM\/DOM\" class=\"wp-image-3325\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107.webp 1312w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107-300x168.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107-1024x574.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107-768x431.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/bbfa8235ca97453ca25c53f766308107-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>Gi\u1edbi thi\u1ec7u<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng c\u00e1p quang hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c duy tr\u00ec hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u v\u00e0 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd l\u00e0 nh\u1eefng \u01b0u ti\u00ean h\u00e0ng \u0111\u1ea7u \u0111\u1ed1i v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng. \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac <strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM)<\/strong> and <strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM)<\/strong> ph\u00e1t huy t\u00e1c d\u1ee5ng. C\u00e1c t\u00ednh n\u0103ng n\u00e2ng cao n\u00e0y, \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n trong c\u00e1c b\u1ed9 thu ph\u00e1t quang ch\u1ea5t l\u01b0\u1ee3ng cao, cung c\u1ea5p <strong>th\u00f4ng tin chi ti\u1ebft theo th\u1eddi gian th\u1ef1c<\/strong> v\u1ec1 t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c li\u00ean k\u1ebft c\u00e1p quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ea1i <strong>LINK-PP<\/strong>, ch\u00fang t\u00f4i t\u00edch h\u1ee3p <strong>\u0111\u1ea7y \u0111\u1ee7 ch\u1ee9c n\u0103ng DDM\/DOM<\/strong> v\u00e0o s\u1ea3n ph\u1ea9m <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">b\u1ed9 thu ph\u00e1t quang<\/a>, c\u1ee7a ch\u00fang t\u00f4i, \u0111\u1ea3m b\u1ea3o <strong>\u0111\u1ed9 tin c\u1eady cao h\u01a1n, vi\u1ec7c x\u1eed l\u00fd s\u1ef1 c\u1ed1 d\u1ec5 d\u00e0ng h\u01a1n v\u00e0 b\u1ea3o tr\u00ec m\u1ea1ng ch\u1ee7 \u0111\u1ed9ng h\u01a1n<\/strong>. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udd0d DDM\/DOM l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DDM<\/strong> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1<\/strong> and <strong>DOM<\/strong> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a <strong>Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1<\/strong>. Hai thu\u1eadt ng\u1eef n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng thay th\u1ebf cho nhau v\u00e0 c\u00f9ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t kh\u00e1i ni\u1ec7m: gi\u00e1m s\u00e1t theo th\u1eddi gian th\u1ef1c c\u00e1c th\u00f4ng s\u1ed1 quan tr\u1ecdng trong b\u1ed9 thu ph\u00e1t quang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u00ednh n\u0103ng n\u00e0y cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean xem d\u1eef li\u1ec7u hi\u1ec7u su\u1ea5t thi\u1ebft y\u1ebfu v\u00e0 c\u00e1c ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 c\u00f4ng c\u1ee5 b\u00ean ngo\u00e0i n\u00e0o. Thay v\u00e0o \u0111\u00f3, ch\u00ednh b\u1ed9 thu ph\u00e1t s\u1ebd b\u00e1o c\u00e1o nh\u1eefng g\u00ec \u0111ang di\u1ec5n ra b\u00ean trong n\u00f3 c\u0169ng nh\u01b0 tr\u00ean li\u00ean k\u1ebft quang\u2014gi\u00fap duy tr\u00ec s\u1ee9c kh\u1ecfe h\u1ec7 th\u1ed1ng, x\u1eed l\u00fd s\u1ef1 c\u1ed1 nhanh h\u01a1n v\u00e0 ng\u0103n ng\u1eeba gi\u00e1n \u0111o\u1ea1n m\u1ea1ng.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udcca DDM\/DOM gi\u00e1m s\u00e1t nh\u1eefng th\u00f4ng s\u1ed1 n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"font-size: 1.125rem;\">C\u00e1c b\u1ed9 thu ph\u00e1t c\u00f3 ch\u1ee9c n\u0103ng DDM\/DOM c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t nhi\u1ec1u th\u00f4ng s\u1ed1 v\u1eadn h\u00e0nh quan tr\u1ecdng, bao g\u1ed3m <\/span><span style=\"color: rgb(38, 38, 38); font-size: 1.125rem;\">Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng, C\u00f4ng su\u1ea5t nh\u1eadn (RX), C\u00f4ng su\u1ea5t truy\u1ec1n (TX), D\u00f2ng \u0111i\u1ec7n thi\u00ean \u00e1p laser, \u0110i\u1ec7n \u00e1p ngu\u1ed3n, v.v.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"839\" height=\"352\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/470a4958b4a2407e84d5eb615e30dc36.png\" alt=\"DDM-Digital Diagnostic Monitoring DOM - Digital Optical Monitoring\" class=\"wp-image-3326\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/470a4958b4a2407e84d5eb615e30dc36.png 839w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/470a4958b4a2407e84d5eb615e30dc36-300x126.png 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/470a4958b4a2407e84d5eb615e30dc36-768x322.png 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/470a4958b4a2407e84d5eb615e30dc36-18x8.png 18w\" sizes=\"(max-width: 839px) 100vw, 839px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup\/><tbody><tr\/><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udee0\ufe0f T\u1ea1i sao DDM\/DOM l\u1ea1i quan tr\u1ecdng?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >1. <strong>Gi\u00e1m s\u00e1t theo th\u1eddi gian th\u1ef1c<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DDM cho ph\u00e9p theo d\u00f5i li\u00ean t\u1ee5c c\u00e1c th\u00f4ng s\u1ed1 quang h\u1ecdc v\u00e0 \u0111i\u1ec7n t\u1eed theo th\u1eddi gian th\u1ef1c. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 xem t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe c\u1ee7a b\u1ed9 thu ph\u00e1t b\u1ea5t k\u1ef3 l\u00fac n\u00e0o m\u00e0 kh\u00f4ng c\u1ea7n th\u00e1o r\u1eddi ho\u1eb7c thay th\u1ebf n\u00f3.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >2. <strong>Ph\u00e1t hi\u1ec7n v\u00e0 c\u00f4 l\u1eadp s\u1ef1 c\u1ed1<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi m\u1ea1ng g\u1eb7p s\u1ef1 c\u1ed1, DDM\/DOM gi\u00fap thu h\u1eb9p nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5. S\u1ee3i quang b\u1ecb \u0111\u1ee9t ch\u0103ng? B\u1ed9 ph\u00e1t \u0111ang g\u1eedi c\u00f4ng su\u1ea5t qu\u00e1 th\u1ea5p ch\u0103ng? V\u1edbi DDM, nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi n\u00e0y ch\u1ec9 c\u00e1ch v\u00e0i c\u00fa nh\u1ea5p chu\u1ed9t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >3. <strong>B\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1eb1ng c\u00e1ch theo d\u00f5i c\u00e1c xu h\u01b0\u1edbng\u2014v\u00ed d\u1ee5 nh\u01b0 c\u00f4ng su\u1ea5t TX gi\u1ea3m d\u1ea7n ho\u1eb7c d\u00f2ng \u0111i\u1ec7n laser t\u0103ng l\u00ean\u2014c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean m\u1ea1ng c\u00f3 th\u1ec3 <strong>d\u1ef1 \u0111o\u00e1n s\u1ef1 c\u1ed1 tr\u01b0\u1edbc khi ch\u00fang x\u1ea3y ra<\/strong>, v\u00e0 l\u00ean k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec ch\u1ee7 \u0111\u1ed9ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >4. <strong>Qu\u1ea3n l\u00fd t\u1eeb xa<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DDM\/DOM \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u quy m\u00f4 l\u1edbn ho\u1eb7c c\u01a1 s\u1edf vi\u1ec5n th\u00f4ng, n\u01a1i vi\u1ec7c ki\u1ec3m tra th\u1ee7 c\u00f4ng c\u00e1c b\u1ed9 thu ph\u00e1t l\u00e0 kh\u00f4ng kh\u1ea3 thi. Ch\u1ea9n \u0111o\u00e1n t\u1eeb xa gi\u00fap gi\u1ea3m kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u1ee7a k\u1ef9 thu\u1eadt vi\u00ean v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian ph\u1ea3n h\u1ed3i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >5. <strong>N\u00e2ng cao th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi c\u00e1c v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0 x\u1eed l\u00fd nhanh ch\u00f3ng, <strong>th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ea1ng \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u<\/strong>, v\u00e0 \u0111\u1ed9 tin c\u1eady t\u1ed5ng th\u1ec3 t\u0103ng l\u00ean\u2014\u0111i\u1ec1u c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p ph\u1ee5 thu\u1ed9c v\u00e0o k\u1ebft n\u1ed1i li\u00ean t\u1ee5c.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2699\ufe0f DDM\/DOM ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c t\u00ednh n\u0103ng DDM\/DOM \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p th\u00f4ng qua m\u1ed9t giao di\u1ec7n k\u1ef9 thu\u1eadt s\u1ed1 chu\u1ea9n b\u00ean trong b\u1ed9 thu ph\u00e1t quang. H\u1ec7 th\u1ed1ng n\u00e0y l\u00e0 s\u1ef1 m\u1edf r\u1ed9ng c\u1ee7a \u0111\u1eb7c t\u1ea3 GBIC c\u0169 h\u01a1n v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0a ra <strong>c\u1ea3nh b\u00e1o v\u00e0 c\u1edd c\u1ea3nh b\u00e1o<\/strong> khi c\u00e1c th\u00f4ng s\u1ed1 v\u01b0\u1ee3t ng\u01b0\u1ee1ng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng trong m\u1ed9t k\u1ecbch b\u1ea3n \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>M\u1ed9t b\u1ed9 thu ph\u00e1t b\u1eaft \u0111\u1ea7u qu\u00e1 nhi\u1ec7t \u2192 H\u1ec7 th\u1ed1ng DDM k\u00edch ho\u1ea1t <strong>c\u1ea3nh b\u00e1o nhi\u1ec7t \u0111\u1ed9<\/strong><\/p><\/li><li><p>H\u1ec7 th\u1ed1ng ch\u1ee7 nh\u1eadn \u0111\u01b0\u1ee3c c\u1ea3nh b\u00e1o n\u00e0y v\u00e0 th\u00f4ng b\u00e1o cho qu\u1ea3n tr\u1ecb vi\u00ean<\/p><\/li><li><p>Qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng (v\u00ed d\u1ee5: gi\u1ea3m t\u1ea3i, thay th\u1ebf module) tr\u01b0\u1edbc khi x\u1ea3y ra h\u1ecfng h\u00f3c ho\u00e0n to\u00e0n<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong c\u00e1c m\u1ea1ng quang ph\u1ee9c t\u1ea1p s\u1eed d\u1ee5ng <strong>WDM (\u0110a ph\u00e2n b\u01b0\u1edbc s\u00f3ng)<\/strong> , DDM c\u0169ng gi\u00fap x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c <strong>k\u00eanh ho\u1eb7c c\u1ed5ng n\u00e0o<\/strong> \u0111ang ho\u1ea1t \u0111\u1ed9ng k\u00e9m\u2014t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83d\udea8 DDM\/DOM h\u1ed7 tr\u1ee3 ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 \u1edf 3 l\u0129nh v\u1ef1c then ch\u1ed1t<\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>C\u1ea3nh b\u00e1o s\u1ef1 c\u1ed1<\/strong><br\/>Nh\u1eadn c\u1ea3nh b\u00e1o theo th\u1eddi gian th\u1ef1c khi \u0111i\u1ec1u ki\u1ec7n b\u1ed9 thu ph\u00e1t l\u1ec7ch kh\u1ecfi gi\u1edbi h\u1ea1n an to\u00e0n \u0111\u00e3 \u0111\u1ecbnh.<\/p><\/li><li><p><strong>\u0110\u1ecbnh v\u1ecb s\u1ef1 c\u1ed1<\/strong><br\/>C\u00f4 l\u1eadp b\u1ed9 thu ph\u00e1t ho\u1eb7c li\u00ean k\u1ebft n\u00e0o trong m\u1ea1ng c\u00e1p quang \u0111ang g\u00e2y ra v\u1ea5n \u0111\u1ec1\u2014kh\u00f4ng c\u00f2n ph\u1ea3i ph\u1ecfng \u0111o\u00e1n n\u1eefa.<\/p><\/li><li><p><strong>D\u1ef1 b\u00e1o s\u1ef1 c\u1ed1<\/strong><br\/>Ph\u00e1t hi\u1ec7n s\u1edbm c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111ang ph\u00e1t tri\u1ec3n, v\u00ed d\u1ee5 nh\u01b0 d\u00f2ng thi\u00ean \u00e1p t\u0103ng d\u1ea7n ho\u1eb7c c\u00f4ng su\u1ea5t RX gi\u1ea3m, \u0111\u1ec3 k\u1ecbp th\u1eddi th\u1ef1c hi\u1ec7n bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba.<\/p><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83e\udde0 V\u00ec sao n\u00ean ch\u1ecdn b\u1ed9 thu ph\u00e1t h\u1ed7 tr\u1ee3 DDM\/DOM?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 thu ph\u00e1t \u0111\u1ec1u c\u00f3 ch\u1ee9c n\u0103ng DDM\/DOM. Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 thu ph\u00e1t h\u1ed7 tr\u1ee3 t\u00ednh n\u0103ng n\u00e0y mang l\u1ea1i l\u1ee3i th\u1ebf c\u1ea1nh tranh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Ph\u00e1t hi\u1ec7n l\u1ed7i <strong>nhanh h\u01a1n v\u00e0 ch\u00ednh x\u00e1c h\u01a1n<\/strong><\/p><\/li><li><p>Gi\u1ea3m chi ph\u00ed <strong>b\u1ea3o tr\u00ec m\u1ea1ng<\/strong><\/p><\/li><li><p>Gi\u1ea3m nhu c\u1ea7u <strong>x\u1eed l\u00fd s\u1ef1 c\u1ed1 th\u1ee7 c\u00f4ng<\/strong><\/p><\/li><li><p>T\u1ed1t h\u01a1n <strong>long-term reliability<\/strong> \u0111\u1ed1i v\u1edbi h\u1ea1 t\u1ea7ng c\u00e1p quang<\/p><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\ud83c\udf10 B\u1ed9 thu ph\u00e1t quang LINK-PP h\u1ed7 tr\u1ee3 DDM\/DOM<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">LINK-PP cung c\u1ea5p \u0111a d\u1ea1ng c\u00e1c b\u1ed9 thu ph\u00e1t hi\u1ec7u su\u1ea5t cao <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">b\u1ed9 thu ph\u00e1t quang<\/a> \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ea7y \u0111\u1ee7 ch\u1ee9c n\u0103ng <strong>Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM\/DOM)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5 ti\u00eau bi\u1ec3u l\u00e0 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/lf-bl23tg-10dx.pdf\"><strong>module LINK-PP LF-BL23TG-10Dx<\/strong><\/a>. Module n\u00e0y h\u1ed7 tr\u1ee3 DDM cho ph\u00e9p gi\u00e1m s\u00e1t ch\u00ednh x\u00e1c n\u0103m th\u00f4ng s\u1ed1 thi\u1ebft y\u1ebfu, bao g\u1ed3m c\u00f4ng su\u1ea5t TX, c\u00f4ng su\u1ea5t RX, d\u00f2ng \u0111i\u1ec7n thi\u00ean \u00e1p laser, \u0111i\u1ec7n \u00e1p v\u00e0 nhi\u1ec7t \u0111\u1ed9. Nh\u1edd \u0111\u00f3, vi\u1ec7c ch\u1ea9n \u0111o\u00e1n nhanh ch\u00f3ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng quang \u0111\u01b0\u1ee3c n\u00e2ng cao.<\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<h2 class=\"wp-block-heading\" >\u2705 T\u00f3m t\u1eaft: DDM\/DOM l\u00e0 t\u00ednh n\u0103ng b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1 (DDM) ho\u1eb7c Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1 (DOM) kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ti\u1ec7n \u00edch xa x\u1ec9\u2014m\u00e0 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 th\u1ef1c ti\u1ec5n v\u00e0 m\u1ea1nh m\u1ebd d\u00e0nh cho b\u1ea5t k\u1ef3 ai qu\u1ea3n l\u00fd m\u1ea1ng c\u00e1p quang. T\u1eeb gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn d\u1ef1 b\u00e1o s\u1ef1 c\u1ed1, DDM\/DOM trao quy\u1ec1n cho k\u1ef9 thu\u1eadt vi\u00ean v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean ki\u1ec3m so\u00e1t h\u1ea1 t\u1ea7ng quang h\u1ecdc c\u1ee7a h\u1ecd b\u1eb1ng nh\u1eefng th\u00f4ng tin chi ti\u1ebft theo th\u1eddi gian th\u1ef1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng ho\u1eb7c n\u00e2ng c\u1ea5p m\u1ea1ng, h\u00e3y ch\u1eafc ch\u1eafn l\u1ef1a ch\u1ecdn c\u00e1c b\u1ed9 thu ph\u00e1t h\u1ed7 tr\u1ee3 DDM\/DOM. V\u00e0 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t, kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u00e0 \u0111\u1ed9 tin c\u1eady tuy\u1ec7t \u0111\u1ed1i\u2014<strong>LINK-PP<\/strong> LINK-PP lu\u00f4n s\u1eb5n s\u00e0ng h\u1ed7 tr\u1ee3 b\u1ea1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa DDM v\u00e0 DOM l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DDM<\/strong> DDM l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1. <strong>DOM<\/strong> DOM l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Gi\u00e1m s\u00e1t quang h\u1ecdc k\u1ef9 thu\u1eadt s\u1ed1. C\u1ea3 hai \u0111\u1ec1u ki\u1ec3m tra b\u1ed9 thu ph\u00e1t quang theo th\u1eddi gian th\u1ef1c. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t nh\u1eefng th\u00f4ng s\u1ed1 n\u00e0o b\u1eb1ng DDM\/DOM?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra c\u00e1c th\u00f4ng tin quan tr\u1ecdng sau \u0111\u00e2y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/p><\/li><li><p>C\u00f4ng su\u1ea5t truy\u1ec1n (TX)<\/p><\/li><li><p>C\u00f4ng su\u1ea5t \u0111\u1ea7u v\u00e0o (RX)<\/p><\/li><li><p>D\u00f2ng ph\u00e2n c\u1ef1c laser<\/p><\/li><li><p>\u0110i\u1ec7n \u00e1p cung c\u1ea5p<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >T\u1ea1i sao vi\u1ec7c gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c l\u1ea1i quan tr\u1ecdng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c gi\u00fap ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 s\u1edbm. V\u00ed d\u1ee5: n\u1ebfu c\u00f4ng su\u1ea5t RX gi\u1ea3m, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 cho th\u1ea5y v\u1ea5n \u0111\u1ec1 v\u1ec1 s\u1ee3i quang. S\u1eeda ch\u1eefa k\u1ecbp th\u1eddi s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1 v\u00e0 duy tr\u00ec \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >DDM\/DOM c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n s\u1ef1 c\u1ed1 kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f3, <strong>DDM\/DOM<\/strong> c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 trong t\u01b0\u01a1ng lai b\u1eb1ng c\u00e1ch theo d\u00f5i xu h\u01b0\u1edbng. V\u00ed d\u1ee5: n\u1ebfu c\u00f4ng su\u1ea5t TX gi\u1ea3m d\u1ea7n, laser c\u00f3 th\u1ec3 \u0111ang b\u1ecb hao m\u00f2n. S\u1eeda ch\u1eefa s\u1edbm s\u1ebd ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 truy c\u1eadp d\u1eef li\u1ec7u DDM\/DOM?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 xem <strong>DDM\/DOM<\/strong> d\u1eef li\u1ec7u b\u1eb1ng c\u00e1c c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh ho\u1eb7c ph\u1ea7n m\u1ec1m. C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y hi\u1ec3n th\u1ecb th\u00f4ng tin tr\u1ef1c ti\u1ebfp \u0111\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n ki\u1ec3m tra v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c b\u1ed9 thu ph\u00e1t.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >Xem Th\u00eam<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a target=\"_blank\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/optical-encryption-future-data-security\/\">Tham gia C\u1ed9ng \u0111\u1ed3ng LINK-PP c\u1ee7a ch\u00fang t\u00f4i ngay h\u00f4m nay<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>DDM\/DOM trong b\u1ed9 thu ph\u00e1t quang cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t th\u1eddi gian th\u1ef1c c\u00e1c th\u00f4ng s\u1ed1 then ch\u1ed1t nh\u01b0 nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00f4ng su\u1ea5t, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng v\u00e0 ph\u00e1t hi\u1ec7n s\u1edbm s\u1ef1 c\u1ed1.<\/p>","protected":false},"author":1,"featured_media":3325,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[26],"class_list":["post-3327","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\/vi\/wp-json\/wp\/v2\/posts\/3327","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=3327"}],"version-history":[{"count":5,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3327\/revisions"}],"predecessor-version":[{"id":11524,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/3327\/revisions\/11524"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/3325"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=3327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=3327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=3327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}