{"id":5201,"date":"2025-09-05T00:00:00","date_gmt":"2025-09-05T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/uncategorized\/1550nm-optical-transceiver-transmission-distances\/"},"modified":"2026-06-22T07:43:10","modified_gmt":"2026-06-22T07:43:10","slug":"1550nm-optical-transceiver-transmission-distances","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/ja\/products\/1550nm-optical-transceiver-transmission-distances","title":{"rendered":"1550nm \u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u306f\u5358\u4e00\u30e2\u30fc\u30c9\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u4e0a\u3067\u6700\u5927\u4f55km\u307e\u3067\u4f1d\u9001\u53ef\u80fd\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e.webp\" alt=\"Long-Haul 1550nm Modules\" class=\"wp-image-5198\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/8b37d5fa99f24795aadd317676a8872e-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u306f\u3058\u3081\u306b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When designing fiber-optic networks, knowing how far a <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/buy-1550nm_optical_transceiver-page4.htm\"><strong>1550nm transceiver<\/strong><\/a> can transmit is essential. This wavelength offers low attenuation, making it ideal for metro and long-haul links. This article explores typical transmission distances, key factors that affect them, and showcases <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478355.htm\">\u30ea\u30bf\u30fc\u30f3\u30fb\u30e9\u30b9\u306f\u30aa\u30d7\u30c6\u30a3\u30ab\u30eb\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u6700\u3082\u91cd\u8981\u304b\u3064\u3088\u304f\u7406\u89e3\u3055\u308c\u3066\u3044\u306a\u3044\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u4e00\u3064\u3067\u3059\u3002\u9ad8\u3044\u30ea\u30bf\u30fc\u30f3\u30fb\u30e9\u30b9\u5024\u306f\u5b89\u5b9a\u3057\u305f\u30c8\u30e9\u30f3\u30b9\u30df\u30c3\u30bf\u30fc\u3001\u4f4e\u8aa4\u308a\u78ba\u7387\u3001\u305d\u3057\u3066\u9577\u5bff\u547d\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/a> built for extended reach.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >1. Typical Transmission Distances for 1550nm Modules<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ja\/knowledge-center\/what-is-single-mode-fiber-and-how-does-it-work\/\">\u5149\u306f\u9577\u8ddd\u96e2\u901a\u4fe1\u5411\u3051\u306e<\/a>, 1550nm transceivers commonly support transmission distances between <strong>40km, 80km and 120km<\/strong>, and in optimal conditions, up to <strong>160km<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For example, mainstream Gigabit Ethernet modules labeled &#8220;ZX&#8221; often claim <strong>80km to 120km<\/strong> reach. Long-haul versions pushing beyond 120km are less common but achievable with high-quality fiber and careful system design.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >2. Factors Influencing Transmission Distance<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Several important factors impact how far a 1550nm signal can travel:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>\u30d5\u30a1\u30a4\u30d0\u30fc\u6e1b\u8870<\/strong>: SMF exhibits very low loss at 1550nm (~0.2 dB\/km), allowing long spans with minimal signal degradation.<\/p><\/li><li><p><strong>Transmit Power &amp; Receiver Sensitivity<\/strong>: Modules with higher output power and sensitive receivers can extend reach.<\/p><\/li><li><p><strong>Fiber Quality &amp; Splicing<\/strong>: Every connector, splice, or bend introduces loss, reducing practical distance.<\/p><\/li><li><p><strong>Use of <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ja\/glossary\/erbium-doped-fiber-amplifier-optical-networks\/\"><strong>EDFA <\/strong><\/a><strong>or DWDM<\/strong>: Amplifying or multiplexing signals can further extend reach, especially over very long links.<\/p><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" >3. Standard Ethernet Benchmarks<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476054.htm\"><strong>10GBASE-ER<\/strong> \u30c8\u30e9\u30f3\u30b7\u30fc\u30d0<\/a> operate at 1550nm and are rated for around <strong>40km<\/strong> over engineered SMF, or <strong>~30 km<\/strong> on standard fiber.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476089.htm\"><strong>10GBASE-ZR<\/strong> models<\/a>\u2014while not IEEE-standard\u2014are commonly built to reach <strong>80km<\/strong> on high-grade fiber. <\/p><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>These industry benchmarks help frame the expectations for modern 1550nm optics.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" >4. LINK-PP Long-Reach Examples<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1.webp\" alt=\"LINK-PP Long-Reach Optical Transceiver\" class=\"wp-image-5199\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/b83995dd692d492f8d12ac8e4faa32d1-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Here are LINK-PP products designed for extended distances:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476868.htm\"><strong>LS-SM551G-80I <\/strong><\/a><strong>(1.25Gbps, 80 km)<\/strong>: Industrial SFP with DOM support, LC duplex connectors, optimized for SMF at 1550nm.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476870.htm\"><strong>LS-SM551G-A0C<\/strong><\/a><strong> (1.25Gbps, 100km)<\/strong>: Compatible with Arista and other systems, offering long-haul performance with DOM and LC connectivity.<\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478317.htm\"><strong>LS-SM5501-A2I <\/strong><\/a><strong>(155Mbps, 120km)<\/strong>: Industrial-grade SFP supporting up to 120 km, featuring DOM and DFB laser design. <\/p><\/li><li><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478355.htm\"><strong><u>LS-SM551G-A6I<\/u><\/strong><\/a><strong> ( SFP, 160km)<\/strong>: high performance, cost effective modules supporting data rate of 1.25Gbps and 160km transmission distance with SMF.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" >5. Quick Comparison Table<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 196px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p\/><p>\u8ddd\u96e2\u7bc4\u56f2<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>\u4ee3\u8868\u7684\u306a\u7528\u9014<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>LINK-PP Recommended Module<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p><strong>\u6700\u592780km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Metro or campus backbone links<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LS-SM551G-80I (1.25Gbps, 80km)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p><strong>\u6700\u5927100km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Regional or long-haul applications<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LS-SM551G-A0C (1.25Gbps, 100km) <\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p><strong>\u6700\u5927120km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Extended reach, industrial environments<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>LS-SM5501-A2I (155Mbps, 120km)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p><strong>Up to 120km (BiDi)<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Long links with fiber economy<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478906.htm\">LS-BL55491G-A2I<\/a> BiDi (1Gbps, 120km) <\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"196\"><p><strong>Up to 160km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ultra-long haul under ideal conditions<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u4e2d\u8ddd\u96e2\uff08\u6700\u59272km\uff09\u306e\u30ea\u30f3\u30af\u306b\u306f\u3001<span class=\"highlight\">100G CWDM4<\/span>\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b3\u30b9\u30c8\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u53d6\u308c\u3066\u304a\u308a\u3001\u5927\u898f\u6a21\u30d3\u30eb\u5185\u306e\u63a5\u7d9a\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002 <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/478355.htm\">\u30ea\u30bf\u30fc\u30f3\u30fb\u30e9\u30b9\u306f\u30aa\u30d7\u30c6\u30a3\u30ab\u30eb\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u304a\u3044\u3066\u6700\u3082\u91cd\u8981\u304b\u3064\u3088\u304f\u7406\u89e3\u3055\u308c\u3066\u3044\u306a\u3044\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u4e00\u3064\u3067\u3059\u3002\u9ad8\u3044\u30ea\u30bf\u30fc\u30f3\u30fb\u30e9\u30b9\u5024\u306f\u5b89\u5b9a\u3057\u305f\u30c8\u30e9\u30f3\u30b9\u30df\u30c3\u30bf\u30fc\u3001\u4f4e\u8aa4\u308a\u78ba\u7387\u3001\u305d\u3057\u3066\u9577\u5bff\u547d\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/a> rated for 160km <\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >\u7d50\u8ad6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001 <strong>1550 nm transceivers over single-mode fiber<\/strong>, typical reach spans from <strong>80km<\/strong> \u3001 <strong>120km<\/strong>, with specialized modules capable of <strong>160km<\/strong> under optimal conditions. Factors like fiber quality, power budget, and system design directly affect performance. LINK-PP offers a comprehensive lineup of long-reach transceivers\u2014from 80km to 160km-rated modules\u2014with industrial-grade reliability. <\/p>\n\n\n\n<div><div widgetid=\"c7308864405a11f099380a58fbc66727\" format=\"embedded\" data-widget-id=\"c7308864405a11f099380a58fbc66727\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>1550nm \u5149\u30c8\u30e9\u30f3\u30b7\u30fc\u30d0\u30fc\u304c\u5358\u4e00\u30e2\u30fc\u30c9\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u4e0a\u3067\u6700\u5927160km\u307e\u3067\u4f1d\u9001\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002\u9577\u8ddd\u96e2\u4f1d\u9001\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u305f LINK-PP \u30e2\u30c7\u30eb\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002.<\/p>","protected":false},"author":1,"featured_media":5200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[26],"class_list":["post-5201","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/5201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/comments?post=5201"}],"version-history":[{"count":4,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/5201\/revisions"}],"predecessor-version":[{"id":11177,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/posts\/5201\/revisions\/11177"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/media\/5200"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/media?parent=5201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/categories?post=5201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/ja\/wp-json\/wp\/v2\/tags?post=5201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}