{"id":5945,"date":"2025-06-12T00:00:00","date_gmt":"2025-06-12T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/pc-vs-upc-vs-apc-fiber-connector-comparison-guide\/"},"modified":"2026-06-22T09:28:12","modified_gmt":"2026-06-22T09:28:12","slug":"pc-vs-upc-vs-apc-fiber-connector-comparison-guide","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/pc-vs-upc-vs-apc-fiber-connector-comparison-guide","title":{"rendered":"C\u00e1ch l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c \u0111\u1ea7u n\u1ed1i s\u1ee3i quang PC, UPC v\u00e0 APC"},"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\/0a22ad03f36a4ee8b3d9c8113f9bf663.webp\" alt=\"PC vs UPS vs APC\" class=\"wp-image-5941\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a22ad03f36a4ee8b3d9c8113f9bf663.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a22ad03f36a4ee8b3d9c8113f9bf663-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a22ad03f36a4ee8b3d9c8113f9bf663-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a22ad03f36a4ee8b3d9c8113f9bf663-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/0a22ad03f36a4ee8b3d9c8113f9bf663-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"qc-p1-tag\" style=\"color: rgb(64, 64, 64);\">In the intricate world of fiber optic networks, every connection point matters. The humble connector, specifically the <\/span><span class=\"qc-p1-tag\"><strong>fiber connector polish type<\/strong><\/span><span class=\"qc-p1-tag\" style=\"color: rgb(64, 64, 64);\">, plays a critical role in signal integrity, loss, and overall network reliability. Understanding the differences between <strong>PC (Physical Contact)<\/strong>, <strong>UPC (Ultra Physical Contact)<\/strong>, and <strong>APC (Angled Physical Contact)<\/strong> polishes is essential for any network designer, installer, or technician. Choosing the wrong type can lead to performance degradation, increased bit error rates (BER), and costly downtime. This guide dives deep into the technology, applications, and selection criteria for these crucial connector types.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>Why Polish Matters: The Physics of Light Coupling<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At the core of any fiber optic connection is the need to align two microscopic glass fibers (typically 9\u00b5m core for single-mode) with extreme precision. The goal is to maximize light transmission from one fiber to the other while minimizing two key parameters:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>Insertion Loss (IL):<\/strong> The amount of signal power lost at the connection point (measured in dB). Lower is better.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Return Loss (RL) \/ Back Reflection:<\/strong> The amount of light reflected back towards the source (measured in dB). <em>Cao h\u01a1n<\/em> RL values (less reflection) are better, especially for high-speed and analog signals.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">The end-face geometry and surface finish of the ceramic ferrule (the part holding the fiber) directly impact IL and RL. This is where the polish type comes in.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>The Contenders: PC, UPC, and APC Explained<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px 0px 4px;\"><strong>PC (Physical Contact):<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>C\u00f4ng ngh\u1ec7:<\/strong> Features a slightly curved (domed) end-face. This curvature ensures the fibers make contact primarily at their central cores when mated, minimizing the tiny air gap present in flat-polished connectors. The curvature helps push contaminants to the edge.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>Hi\u1ec7u n\u0103ng:<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>T\u1ed5n hao ch\u00e8n (Insertion Loss):<\/strong> Typically around -0.5 dB. Adequate for many legacy systems.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Return Loss:<\/strong> Around -30 dB to -40 dB. Significant back reflection can occur, potentially interfering with laser sources.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>\u1ee8ng D\u1ee5ng:<\/strong> Ch\u1ee7 y\u1ebfu \u0111\u00e3 b\u1ecb thay th\u1ebf b\u1edfi UPC v\u00e0 APC trong c\u00e1c h\u1ec7 th\u1ed1ng m\u1edbi. V\u1eabn \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng vi\u1ec5n th\u00f4ng c\u0169, c\u00e1c li\u00ean k\u1ebft d\u1eef li\u1ec7u c\u01a1 b\u1ea3n ho\u1eb7c \u1ee9ng d\u1ee5ng \u0111a mode n\u01a1i ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c \u00edt quan tr\u1ecdng h\u01a1n. Kh\u00f4ng khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i t\u1ed1c \u0111\u1ed9 cao ho\u1eb7c t\u01b0\u01a1ng t\u1ef1.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>UPC (Ti\u1ebfp x\u00fac V\u1eadt l\u00fd Si\u00eau cao):<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>C\u00f4ng ngh\u1ec7:<\/strong> L\u00e0 phi\u00ean b\u1ea3n n\u00e2ng cao c\u1ee7a PC. S\u1eed d\u1ee5ng quy tr\u00ecnh \u0111\u00e1nh b\u00f3ng m\u1edf r\u1ed9ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u00f2m c\u1ea7u m\u1ecbn h\u01a1n v\u00e0 nh\u1eb5n h\u01a1n \u0111\u00e1ng k\u1ec3, t\u1eeb \u0111\u00f3 gi\u1ea3m c\u00e1c khuy\u1ebft t\u1eadt vi m\u00f4.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>Hi\u1ec7u n\u0103ng:<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>T\u1ed5n hao ch\u00e8n (Insertion Loss):<\/strong> Th\u1ea5p h\u01a1n PC, th\u01b0\u1eddng l\u00e0 -0,3 dB ho\u1eb7c t\u1ed1t h\u01a1n. R\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u suy hao t\u00edn hi\u1ec7u.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Return Loss:<\/strong> C\u1ea3i thi\u1ec7n so v\u1edbi PC, \u0111\u1ea1t m\u1ee9c -50 dB ho\u1eb7c t\u1ed1t h\u01a1n. Ph\u00f9 h\u1ee3p cho h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 (Gigabit Ethernet, 10G, th\u1eadm ch\u00ed m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng 25G).<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px;\"><strong>\u1ee8ng D\u1ee5ng:<\/strong> L\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1ea5t cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111a mode v\u00e0 \u0111\u01a1n mode th\u00f4ng d\u1ee5ng trong trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng doanh nghi\u1ec7p, \u0111i\u1ec3m ph\u00e2n ph\u1ed1i FTTH (kh\u00f4ng d\u00f9ng cho video t\u01b0\u01a1ng t\u1ef1) v\u00e0 vi\u1ec5n th\u00f4ng n\u01a1i y\u00eau c\u1ea7u \u0111\u1ed9 ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c (RL) r\u1ea5t cao kh\u00f4ng b\u1eaft bu\u1ed9c. \u0110em l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1t nh\u1ea5t gi\u1eefa hi\u1ec7u n\u0103ng v\u00e0 chi ph\u00ed cho nhi\u1ec1u li\u00ean k\u1ebft k\u1ef9 thu\u1eadt s\u1ed1. T\u01b0\u01a1ng th\u00edch v\u1edbi m\u1ed9t lo\u1ea1t thi\u1ebft b\u1ecb r\u1ed9ng l\u1edbn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a> (SFP, SFP+, QSFP+, v.v.).<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>APC (Ti\u1ebfp x\u00fac V\u1eadt l\u00fd G\u00f3c nghi\u00eang):<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>C\u00f4ng ngh\u1ec7:<\/strong> C\u00f3 m\u1eb7t \u0111\u1ea7u \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng *nghi\u00eang 8 \u0111\u1ed9* <em>k\u1ebft h\u1ee3p<\/em> v\u1edbi \u0111\u1ed9 nh\u1eb5n si\u00eau m\u1ecbn c\u1ee7a UPC. G\u00f3c nghi\u00eang n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 kh\u00e1c bi\u1ec7t then ch\u1ed1t.<\/p><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>Hi\u1ec7u n\u0103ng:<\/strong><\/p><ul><li><p style=\"margin: 0px;\"><strong>T\u1ed5n hao ch\u00e8n (Insertion Loss):<\/strong> T\u01b0\u01a1ng \u0111\u01b0\u01a1ng UPC, th\u01b0\u1eddng l\u00e0 -0,3 dB ho\u1eb7c t\u1ed1t h\u01a1n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Return Loss:<\/strong> V\u01b0\u1ee3t tr\u1ed9i r\u00f5 r\u1ec7t, \u0111\u1ea1t m\u1ee9c -60 dB ho\u1eb7c t\u1ed1t h\u01a1n. B\u1ec1 m\u1eb7t nghi\u00eang khi\u1ebfn \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 b\u1ecb h\u01b0\u1edbng v\u00e0o l\u1edbp v\u1ecf b\u1ecdc c\u1ee7a s\u1ee3i quang, n\u01a1i n\u00f3 b\u1ecb h\u1ea5p th\u1ee5 thay v\u00ec quay tr\u1edf l\u1ea1i laser.<\/p><\/li><\/ul><\/li><li><p style=\"margin: 0px 0px 4px;\"><strong>\u1ee8ng D\u1ee5ng:<\/strong> <em>Essential<\/em> cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ef1c k\u1ef3 nh\u1ea1y c\u1ea3m v\u1edbi ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c:<\/p><ul><li><p style=\"margin: 0px;\">M\u1ea1ng t\u1ed1c \u0111\u1ed9 cao (40G, 100G, 400G Ethernet, CPRI\/eCPRI cho 5G)<\/p><\/li><li><p style=\"margin: 0px;\">M\u1ea1ng b\u0103ng th\u00f4ng r\u1ed9ng RF (truy\u1ec1n d\u1eabn video CATV\/HFC \u2013 t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi ph\u1ea3n x\u1ea1)<\/p><\/li><li><p style=\"margin: 0px;\"><strong>M\u1ea1ng quang th\u1ee5 \u0111\u1ed9ng (PON)<\/strong> nh\u01b0 GPON, XGS-PON (\u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n ng\u01b0\u1ee3c)<\/p><\/li><li><p style=\"margin: 0px;\">H\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eabn quang \u0111\u1ed3ng pha<\/p><\/li><li><p style=\"margin: 0px;\">B\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng n\u00e0o s\u1eed d\u1ee5ng laser ph\u1ea3n h\u1ed3i ph\u00e2n b\u1ed1 (DFB). Y\u00eau c\u1ea7u b\u1ed9 thu ph\u00e1t quang <strong>t\u01b0\u01a1ng th\u00edch \u0111\u1eb7c bi\u1ec7t v\u1edbi APC<\/strong>.<\/p><\/li><\/ul><\/li><\/ul><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>So s\u00e1nh quan tr\u1ecdng gi\u1eefa PC, UPC v\u00e0 APC:<\/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\/f0bb80e067e349f895f8ca165fc615b0.webp\" alt=\"PC vs UPC vs APC\" class=\"wp-image-5942\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f0bb80e067e349f895f8ca165fc615b0.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f0bb80e067e349f895f8ca165fc615b0-300x178.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f0bb80e067e349f895f8ca165fc615b0-1024x608.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f0bb80e067e349f895f8ca165fc615b0-768x456.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/f0bb80e067e349f895f8ca165fc615b0-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c kh\u00e1c bi\u1ec7t ch\u00ednh:<\/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;\"\/><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>PC (Physical Contact)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>UPC (Ultra Physical Contact)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>APC (Angled Physical Contact)<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u1eb7t \u0111\u1ea7u<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 cong h\u00ecnh c\u1ea7u<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u0110\u1ed9 cong h\u00ecnh c\u1ea7u n\u00e2ng cao<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>G\u00f3c nghi\u00eang 8 \u0111\u1ed9<\/strong> + \u0110\u1ed9 cong<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110\u00e1nh b\u00f3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u00eau chu\u1ea9n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Si\u00eau m\u1ecbn<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Si\u00eau m\u1ecbn<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed5n hao ch\u00e8n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -0,5 dB<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>~ -0,3 dB ho\u1eb7c t\u1ed1t h\u01a1n<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -0,3 dB ho\u1eb7c t\u1ed1t h\u01a1n<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed5n hao ph\u1ea3n x\u1ea1 (Return Loss)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -30 dB \u0111\u1ebfn -40 dB<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~ -50 dB ho\u1eb7c t\u1ed1t h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>&gt; -60 dB<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110i\u1ec3m m\u1ea1nh ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ti\u1ebfp x\u00fac c\u01a1 b\u1ea3n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u1ed5n hao th\u1ea5p (hi\u1ec7u qu\u1ea3 chi ph\u00ed)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u1ea3n x\u1ea1 c\u1ef1c th\u1ea5p<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>\u0110i\u1ec3m y\u1ebfu ch\u00ednh<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>T\u1ed5n hao v\u00e0 ph\u1ea3n x\u1ea1 cao h\u01a1n<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Kh\u00f4ng l\u00fd t\u01b0\u1edfng cho RF si\u00eau nh\u1ea1y \/ t\u1ed1c \u0111\u1ed9 cao<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chi ph\u00ed h\u01a1i cao h\u01a1n, kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi PC\/UPC<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>M\u00e3 m\u00e0u<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Xanh lam (SM), Beige (MM)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Xanh lam (SM), Beige (MM)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Xanh l\u00e1<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>T\u01b0\u01a1ng th\u00edch<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PC, UPC (kh\u00f4ng khuy\u1ebfn ngh\u1ecb)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>PC, UPC<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Ch\u1ec9 APC<\/strong> (Vi\u1ec7c gh\u00e9p n\u1ed1i g\u00e2y h\u01b0 h\u1ea1i)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u00f9 h\u1ee3p nh\u1ea5t cho<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>H\u1ec7 th\u1ed1ng c\u0169, \u0111a mode<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Trung t\u00e2m d\u1eef li\u1ec7u, m\u1ea1ng LAN doanh nghi\u1ec7p, vi\u1ec5n th\u00f4ng t\u1ed5ng qu\u00e1t, FTTH k\u1ef9 thu\u1eadt s\u1ed1<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>CATV\/HFC, t\u1ed1c \u0111\u1ed9 cao (40G+), PON, RFoG, k\u1ebft n\u1ed1i fronthaul 5G<\/strong><\/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><strong>M\u1eb9o:<br><\/strong> Lu\u00f4n kh\u1edbp lo\u1ea1i \u0111\u1ea7u n\u1ed1i \u1edf c\u1ea3 hai \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng c\u00e1p quang \u0111\u1ec3 duy tr\u00ec hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u v\u00e0 tr\u00e1nh suy hao t\u00edn hi\u1ec7u.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng kh\u00e1c bi\u1ec7t ch\u00ednh<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed9c tranh lu\u1eadn gi\u1eefa PC, UPC v\u00e0 APC xoay quanh ba y\u1ebfu t\u1ed1 ch\u00ednh: h\u00ecnh h\u1ecdc m\u1eb7t cu\u1ed1i, t\u1ed5n hao ph\u1ea3n x\u1ea1 v\u00e0 s\u1ef1 ph\u00f9 h\u1ee3p \u1ee9ng d\u1ee5ng. M\u1ed7i lo\u1ea1i \u0111\u1ea7u n\u1ed1i mang l\u1ea1i nh\u1eefng \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf ri\u00eang, khi\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn tr\u1edf n\u00ean then ch\u1ed1t \u0111\u1ed1i v\u1edbi \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ea1ng.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>H\u00ecnh h\u1ecdc m\u1eb7t cu\u1ed1i v\u00e0 g\u00f3c nghi\u00eang<\/strong><br\/>C\u1ea3 hai lo\u1ea1i \u0111\u1ea7u n\u1ed1i PC v\u00e0 UPC \u0111\u1ec1u c\u00f3 m\u1eb7t cu\u1ed1i ph\u1eb3ng ho\u1eb7c h\u01a1i v\u00f2m v\u1edbi g\u00f3c nghi\u00eang 0\u00b0. C\u00e1c \u0111\u1ea7u n\u1ed1i UPC \u0111\u01b0\u1ee3c \u0111\u00e1nh b\u00f3ng th\u00eam, t\u1ea1o ra b\u1ec1 m\u1eb7t m\u01b0\u1ee3t h\u01a1n v\u00e0 hi\u1ec7u n\u0103ng c\u1ea3i thi\u1ec7n so v\u1edbi PC. \u0110\u1ea7u n\u1ed1i APC n\u1ed5i b\u1eadt nh\u1edd m\u1eb7t cu\u1ed1i nghi\u00eang 8\u00b0, gi\u00fap h\u01b0\u1edbng \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 v\u00e0o l\u1edbp v\u1ecf b\u1ecdc s\u1ee3i quang thay v\u00ec quay tr\u1edf l\u1ea1i ngu\u1ed3n. Thi\u1ebft k\u1ebf n\u00e0y l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c.<\/p><\/li><li><p><strong>T\u1ed5n hao ph\u1ea3n x\u1ea1 v\u00e0 t\u1ed5n hao ch\u00e8n<\/strong><br\/>C\u00e1c ph\u00e9p \u0111o trong ng\u00e0nh cho th\u1ea5y t\u1ed5n hao ch\u00e8n gi\u1eef m\u1ee9c t\u01b0\u01a1ng t\u1ef1 tr\u00ean c\u1ea3 ba lo\u1ea1i \u0111\u1ea7u n\u1ed1i s\u1ee3i quang, th\u01b0\u1eddng kho\u1ea3ng 0,3 dB. \u0110\u1ea7u n\u1ed1i UPC th\u01b0\u1eddng \u0111\u1ea1t t\u1ed5n hao ch\u00e8n th\u1ea5p nh\u1ea5t nh\u1edd quy tr\u00ecnh \u0111\u00e1nh b\u00f3ng ch\u00ednh x\u00e1c. Tuy nhi\u00ean, kh\u00e1c bi\u1ec7t r\u00f5 r\u1ec7t nh\u1ea5t n\u1eb1m \u1edf t\u1ed5n hao ph\u1ea3n x\u1ea1. \u0110\u1ea7u n\u1ed1i PC \u0111\u1ea1t kho\u1ea3ng -40 dB, UPC c\u1ea3i thi\u1ec7n l\u00ean -50 dB, c\u00f2n APC \u0111\u1ea1t -60 dB ho\u1eb7c t\u1ed1t h\u01a1n. T\u1ed5n hao ph\u1ea3n x\u1ea1 c\u00e0ng cao th\u00ec l\u01b0\u1ee3ng \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c l\u1ea1i c\u00e0ng \u00edt\u2014y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng s\u1ee3i quang hi\u1ec7u n\u0103ng cao.<\/p><\/li><li><p><strong>M\u00e3 m\u00e0u v\u00e0 nh\u1eadn d\u1ea1ng<\/strong><br\/>M\u00e3 m\u00e0u gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c nh\u1eadn di\u1ec7n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng. \u0110\u1ea7u n\u1ed1i PC th\u01b0\u1eddng c\u00f3 m\u00e0u xanh lam ho\u1eb7c \u0111en, \u0111\u1ea7u n\u1ed1i UPC m\u00e0u xanh lam, c\u00f2n \u0111\u1ea7u n\u1ed1i APC m\u00e0u xanh l\u1ee5c. D\u1ea5u hi\u1ec7u tr\u1ef1c quan n\u00e0y gi\u00fap k\u1ef9 thu\u1eadt vi\u00ean tr\u00e1nh l\u1eafp sai \u0111\u1ea7u n\u1ed1i\u2014vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 g\u00e2y t\u1ed5n hao ch\u00e8n qu\u00e1 m\u1ee9c v\u00e0 suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u.<\/p><\/li><li><p><strong>Application Suitability<\/strong><br\/>\u0110\u1ea7u n\u1ed1i PC ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong c\u00e1c m\u1ea1ng LAN doanh nghi\u1ec7p ti\u00eau chu\u1ea9n v\u00e0 m\u00f4i tr\u01b0\u1eddng vi\u1ec5n th\u00f4ng chung, n\u01a1i y\u00eau c\u1ea7u t\u1ed5n hao ph\u1ea3n x\u1ea1 \u1edf m\u1ee9c v\u1eeba ph\u1ea3i. \u0110\u1ea7u n\u1ed1i UPC, nh\u1edd quy tr\u00ecnh \u0111\u00e1nh b\u00f3ng c\u1ea3i ti\u1ebfn, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng truy\u1ec1n h\u00ecnh k\u1ef9 thu\u1eadt s\u1ed1, \u0111i\u1ec7n tho\u1ea1i v\u00e0 trung t\u00e2m d\u1eef li\u1ec7u\u2014nh\u1eefng n\u01a1i c\u1ea7n ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c th\u1ea5p h\u01a1n nh\u01b0ng kh\u00f4ng \u0111\u00f2i h\u1ecfi m\u1ee9c t\u1ed1i thi\u1ec3u tuy\u1ec7t \u0111\u1ed1i. \u0110\u1ea7u n\u1ed1i APC v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c m\u1ea1ng quang \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u01b0 WDM, FTTx v\u00e0 truy\u1ec1n d\u1eabn video RF, n\u01a1i ngay c\u1ea3 ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c t\u1ed1i thi\u1ec3u c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n hi\u1ec7u n\u0103ng.<\/p><\/li><li><p><strong>Vi\u1ec7c gh\u00e9p n\u1ed1i v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch<\/strong><br\/>K\u1ef9 thu\u1eadt vi\u00ean tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c gh\u00e9p \u0111\u1ea7u n\u1ed1i APC v\u1edbi \u0111\u1ea7u n\u1ed1i PC ho\u1eb7c UPC. M\u1eb7t cu\u1ed1i nghi\u00eang c\u1ee7a APC kh\u00f4ng c\u0103n ch\u1ec9nh \u0111\u01b0\u1ee3c v\u1edbi b\u1ec1 m\u1eb7t ph\u1eb3ng ho\u1eb7c v\u00f2m c\u1ee7a PC v\u00e0 UPC, d\u1eabn \u0111\u1ebfn t\u1ed5n hao ch\u00e8n cao v\u00e0 t\u1ed5n hao ph\u1ea3n x\u1ea1 k\u00e9m. Lu\u00f4n s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t lo\u1ea1i \u0111\u1ea7u n\u1ed1i \u1edf c\u1ea3 hai \u0111\u1ea7u c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y s\u1ee3i quang.<\/p><\/li><li><p><strong>Hi\u1ec7u n\u0103ng theo th\u1eddi gian<\/strong><br\/>C\u00e1c b\u00e0i ki\u1ec3m tra trong ng\u00e0nh x\u00e1c nh\u1eadn r\u1eb1ng \u0111\u1ea7u n\u1ed1i APC duy tr\u00ec t\u1ed5n hao ph\u1ea3n x\u1ea1 th\u1ea5p ngay c\u1ea3 sau nhi\u1ec1u chu k\u1ef3 gh\u00e9p n\u1ed1i l\u1eb7p l\u1ea1i\u2014mi\u1ec5n l\u00e0 ch\u00fang ch\u1ec9 \u0111\u01b0\u1ee3c gh\u00e9p v\u1edbi c\u00e1c \u0111\u1ea7u n\u1ed1i APC kh\u00e1c. \u0110\u1ea7u n\u1ed1i UPC v\u00e0 PC c\u00f3 th\u1ec3 suy gi\u1ea3m hi\u1ec7u n\u0103ng theo th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t n\u1ebfu ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp \u0111\u00e1nh b\u00f3ng gi\u1ea3m s\u00fat.<\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Note:<\/strong> K\u1ebft h\u1ee3p c\u1ea3 hai ph\u00e9p \u0111o t\u1ed5n hao ch\u00e8n v\u00e0 t\u1ed5n hao ph\u1ea3n x\u1ea1 s\u1ebd cho \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c h\u01a1n v\u1ec1 hi\u1ec7u n\u0103ng \u0111\u1ea7u n\u1ed1i. M\u1eb7c d\u00f9 t\u1ed5n hao ch\u00e8n g\u1ea7n nh\u01b0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, nh\u01b0ng s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed5n hao ph\u1ea3n x\u1ea1 th\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u cho c\u00e1c \u1ee9ng d\u1ee5ng s\u1ee3i quang nh\u1ea1y c\u1ea3m.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>L\u1ef1a ch\u1ecdn \u0111\u1ea7u n\u1ed1i ph\u00f9 h\u1ee3p: C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>\u1ee8ng d\u1ee5ng &amp; lo\u1ea1i t\u00edn hi\u1ec7u:<\/strong> \u0110\u00e2y l\u00e0 d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1? T\u1ed1c \u0111\u1ed9 cao? Video t\u01b0\u01a1ng t\u1ef1 (RF)? RF v\u00e0 d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1 t\u1ed1c \u0111\u1ed9 r\u1ea5t cao b\u1eaft bu\u1ed9c d\u00f9ng APC.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Ti\u00eau chu\u1ea9n m\u1ea1ng:<\/strong> Ki\u1ec3m tra ti\u00eau chu\u1ea9n PON, \u0111\u1eb7c t\u1ea3 vi\u1ec5n th\u00f4ng ho\u1eb7c y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb. Nhi\u1ec1u OLT\/ONU hi\u1ec7n \u0111\u1ea1i b\u1eaft bu\u1ed9c d\u00f9ng APC.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Hi\u1ec7u n\u0103ng y\u00eau c\u1ea7u:<\/strong> Ng\u00e2n s\u00e1ch t\u1ed5n hao ch\u00e8n (IL) v\u00e0 t\u1ed5n hao ph\u1ea3n x\u1ea1 (RL) ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 bao nhi\u00eau? \u0110ang tri\u1ec3n khai h\u1ec7 th\u1ed1ng 100G tr\u1edf l\u00ean? APC l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n h\u01a1n.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>T\u00ednh t\u01b0\u01a1ng th\u00edch:<\/strong> <strong>Vi\u1ec7c k\u1ebft h\u1ee3p APC v\u1edbi PC ho\u1eb7c UPC S\u1ebc H\u01af H\u1ea0I \u0110\u1ea6U N\u1ed0I!<\/strong> Lu\u00f4n kh\u1edbp \u0111\u00fang lo\u1ea1i \u0111\u00e1nh b\u00f3ng. APC s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i ferrule m\u00e0u xanh l\u1ee5c \u0111\u1eb7c tr\u01b0ng \u0111\u1ec3 nh\u1eadn di\u1ec7n b\u1eb1ng m\u1eaft. \u0110\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang t\u1ed1c \u0111\u1ed9 cao<\/strong><\/a> kh\u1edbp \u0111\u00fang lo\u1ea1i \u0111\u1ea7u n\u1ed1i (v\u00ed d\u1ee5: module SFP+ c\u00f3 c\u1ed5ng ti\u1ebfp nh\u1eadn APC d\u00e0nh ri\u00eang cho \u0111\u1ea7u n\u1ed1i m\u00e0u xanh l\u1ee5c).<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Chi ph\u00ed:<\/strong> UPC n\u00f3i chung mang l\u1ea1i t\u1ef7 l\u1ec7 chi ph\u00ed\u2013hi\u1ec7u n\u0103ng t\u1ed1t nh\u1ea5t cho \u1ee9ng d\u1ee5ng k\u1ef9 thu\u1eadt s\u1ed1 ti\u00eau chu\u1ea9n. APC c\u00f3 gi\u00e1 cao h\u01a1n m\u1ed9t ch\u00fat nh\u01b0ng l\u00e0 y\u1ebfu t\u1ed1 b\u1eaft bu\u1ed9c khi c\u1ea7n thi\u1ebft.<\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u01afu th\u1ebf LINK-PP: \u0110\u1ed1i t\u00e1c \u0111\u1ed3ng h\u00e0nh c\u1ee7a b\u1ea1n trong k\u1ebft n\u1ed1i \u0111\u1ed9 ch\u00ednh x\u00e1c cao<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac.webp\" alt=\"LINK-PP\" class=\"wp-image-5943\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac.webp 1200w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac-300x169.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac-1024x576.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac-768x432.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/1214cc16cfed47a5bc0a997e7c70a1ac-18x10.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c \u0111i\u1ec1u h\u01b0\u1edbng c\u00e1c \u0111\u1eb7c t\u1ea3 \u0111\u1ea7u n\u1ed1i v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> kho h\u00e0ng c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 r\u1ea5t ph\u1ee9c t\u1ea1p. T\u1ea1i <strong>LINK-PP<\/strong>, ch\u00fang t\u00f4i chuy\u00ean cung c\u1ea5p gi\u1ea3i ph\u00e1p s\u1ee3i quang hi\u1ec7u n\u0103ng cao. Ch\u00fang t\u00f4i cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>H\u01b0\u1edbng d\u1eabn chuy\u00ean s\u00e2u:<\/strong> C\u00e1c k\u1ef9 s\u01b0 c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 b\u1ea1n l\u1ef1a ch\u1ecdn \u0111\u1ea7u n\u1ed1i PC, UPC ho\u1eb7c APC t\u1ed1i \u01b0u v\u00e0 c\u00e1c <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng th\u00edch ph\u00f9 h\u1ee3p nh\u1ea5t cho \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3\u2014d\u00f9 \u0111\u00f3 l\u00e0 tri\u1ec3n khai <strong>b\u1ed9 thu ph\u00e1t quang trong trung t\u00e2m d\u1eef li\u1ec7u m\u1eadt \u0111\u1ed9 cao,<\/strong> hay m\u1ea1ng FTTx ngo\u00e0i tr\u1eddi b\u1ec1n b\u1ec9.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Linh ki\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng cao:<\/strong> D\u00e2y n\u1ed1i, d\u00e2y n\u1ed1i \u0111\u1ea7u cu\u1ed1i (pigtails) v\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u0111\u00e1ng tin c\u1eady v\u1edbi c\u00e1c l\u1edbp \u0111\u00e1nh b\u00f3ng PC, UPC v\u00e0 APC ch\u00ednh x\u00e1c, \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo ti\u00eau chu\u1ea9n nghi\u00eam ng\u1eb7t nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u1ed5n hao th\u1ea5p v\u00e0 tu\u1ed5i th\u1ecd d\u00e0i.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Gi\u1ea3i ph\u00e1p b\u1ed9 thu ph\u00e1t to\u00e0n di\u1ec7n:<\/strong> \u0110a d\u1ea1ng c\u00e1c b\u1ed9 thu ph\u00e1t quang <strong>SFP, SFP+, QSFP28<\/strong> v\u00e0 nhi\u1ec1u lo\u1ea1i kh\u00e1c, \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o t\u01b0\u01a1ng th\u00edch v\u1edbi m\u1ecdi lo\u1ea1i \u0111\u00e1nh b\u00f3ng \u0111\u1ec3 t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch.<\/p><\/li>\n<\/ul>\n\n\n\n<div><div widgetid=\"3ef779ac451211f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"3ef779ac451211f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" >FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu ai \u0111\u00f3 k\u1ebft h\u1ee3p sai \u0111\u1ea7u n\u1ed1i APC v\u00e0 UPC?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c k\u1ebft h\u1ee3p sai \u0111\u1ea7u n\u1ed1i APC v\u00e0 UPC g\u00e2y ra c\u0103n ch\u1ec9nh k\u00e9m. H\u1ec7 qu\u1ea3 l\u00e0 t\u1ed5n hao ch\u00e8n t\u0103ng cao v\u00e0 ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c gia t\u0103ng. Hi\u1ec7u n\u0103ng m\u1ea1ng suy gi\u1ea3m v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u b\u1ecb \u1ea3nh h\u01b0\u1edfng. K\u1ef9 thu\u1eadt vi\u00ean lu\u00f4n ph\u1ea3i \u0111\u1ea3m b\u1ea3o kh\u1edbp \u0111\u00fang lo\u1ea1i \u0111\u1ea7u n\u1ed1i \u1edf c\u1ea3 hai \u0111\u1ea7u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 k\u1ef9 thu\u1eadt vi\u00ean nh\u1eadn di\u1ec7n lo\u1ea1i \u0111\u1ea7u n\u1ed1i t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 thu\u1eadt vi\u00ean s\u1eed d\u1ee5ng m\u00e3 m\u00e0u \u0111\u1ec3 nh\u1eadn di\u1ec7n nhanh. M\u00e0u xanh lam bi\u1ec3u th\u1ecb \u0111\u1ea7u n\u1ed1i UPC ho\u1eb7c PC. M\u00e0u xanh l\u1ee5c lu\u00f4n ch\u1ec9 \u0111\u1ea7u n\u1ed1i APC. Nh\u00e3n d\u00e1n tr\u00ean b\u1ea3ng \u0111\u1ea5u n\u1ed1i v\u00e0 c\u00e1p c\u0169ng gi\u00fap x\u00e1c nh\u1eadn lo\u1ea1i \u0111\u1ea7u n\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Lo\u1ea1i \u0111\u1ea7u n\u1ed1i n\u00e0o mang l\u1ea1i hi\u1ec7u n\u0103ng t\u1ed1t nh\u1ea5t cho c\u00e1c li\u00ean k\u1ebft kho\u1ea3ng c\u00e1ch xa?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea7u n\u1ed1i APC cung c\u1ea5p t\u1ed5n hao ph\u1ea3n x\u1ea1 cao nh\u1ea5t v\u00e0 ph\u1ea3n x\u1ea1 ng\u01b0\u1ee3c th\u1ea5p nh\u1ea5t. Ch\u00fang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t trong c\u00e1c m\u1ea1ng \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 kho\u1ea3ng c\u00e1ch xa nh\u01b0 h\u1ec7 th\u1ed1ng WDM ho\u1eb7c FTTH.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110\u1ea7u n\u1ed1i PC v\u1eabn c\u00f2n ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c \u0111\u1ea7u n\u1ed1i PC v\u1eabn hi\u1ec7u qu\u1ea3 cho c\u00e1c m\u1ea1ng LAN doanh nghi\u1ec7p ti\u00eau chu\u1ea9n v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng vi\u1ec5n th\u00f4ng chung. Ch\u00fang cung c\u1ea5p hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p ch\u1ec9 y\u00eau c\u1ea7u m\u1ee9c t\u1ed5n hao ph\u1ea3n x\u1ea1 v\u1eeba ph\u1ea3i. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng n\u00e2ng cao ho\u1eb7c t\u1ed1c \u0111\u1ed9 cao, c\u00e1c \u0111\u1ea7u n\u1ed1i UPC ho\u1eb7c APC ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >N\u00ean ki\u1ec3m tra ho\u1eb7c l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang bao l\u00e2u m\u1ed9t l\u1ea7n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ef9 thu\u1eadt vi\u00ean n\u00ean ki\u1ec3m tra v\u00e0 l\u00e0m s\u1ea1ch \u0111\u1ea7u n\u1ed1i s\u1ee3i quang tr\u01b0\u1edbc m\u1ed7i l\u1ea7n l\u1eafp \u0111\u1eb7t ho\u1eb7c t\u00e1i k\u1ebft n\u1ed1i. Vi\u1ec7c b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 gi\u00fap ng\u0103n ng\u1eeba nhi\u1ec5m b\u1ea9n, gi\u1ea3m t\u1ed5n hao t\u00edn hi\u1ec7u v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd \u0111\u1ea7u n\u1ed1i.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1eb9o: Lu\u00f4n s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 l\u00e0m s\u1ea1ch \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t v\u00e0 tu\u00e2n th\u1ee7 h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 \u0111\u1ea1t k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p><\/blockquote>\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\/cat5e-vs-cat6-vs-cat7-ethernet-cable\/\">Ch\u00e0o m\u1eebng v\u00e0 l\u1eddi ch\u00e0o th\u00e2n \u00e1i \u0111\u1ebfn c\u1ed9ng \u0111\u1ed3ng LINK-PP<\/a><\/p>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>So s\u00e1nh c\u00e1c \u0111\u1ea7u n\u1ed1i s\u1ee3i quang PC, UPC v\u00e0 APC \u0111\u1ec3 ch\u1ecdn lo\u1ea1i ph\u00f9 h\u1ee3p nh\u1ea5t cho m\u1ea1ng c\u1ee7a b\u1ea1n. Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ed5n hao ph\u1ea3n h\u1ed3i, t\u1ed5n hao ch\u00e8n v\u00e0 \u1ee9ng d\u1ee5ng.<\/p>","protected":false},"author":1,"featured_media":5944,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-5945","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\/5945","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=5945"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5945\/revisions"}],"predecessor-version":[{"id":11465,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/5945\/revisions\/11465"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/5944"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=5945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=5945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=5945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}