{"id":5097,"date":"2025-09-12T00:00:00","date_gmt":"2025-09-12T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules\/"},"modified":"2026-06-22T09:05:47","modified_gmt":"2026-06-22T09:05:47","slug":"10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/fr\/products\/10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules","title":{"rendered":"SFP+ LR contre SFP28 LR \u2014 Choisir le bon module SFP 1310 nm pour des applications sur 10 km"},"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\/1ffb04ce09ed46f8980d1b67f46ef8c6.webp\" alt=\"10G SFP+ LR, 25G SFP28 LR\" class=\"wp-image-5094\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >1. Introduction \u2014 why 10km matters<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A 10km <strong>monomode (SMF)<\/strong> link is a common requirement for campus backbones, data center interconnects within metro campuses, and many access\/aggregation links. For these scenarios, the two mainstream choices are <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\"><strong>10G SFP+ LR<\/strong><\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\"><strong>25 G SFP28 LR<\/strong><\/a> 1310nm modules. Picking the right form factor affects bandwidth, power consumption, interoperability, and cost of upgrades. Reliable technical comparisons and product-level checks (e.g., <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm?ca=1487&amp;cv=8306\">LINK-PP\u2019s modules<\/a>) help procurement and network design decisions. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >2. 1310nm 10G SFP+ LR \u2014 overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is.<\/strong> The 10G SFP+ LR module implements 10GBASE-LR optics for Ethernet links up to <strong>10\u00a0km<\/strong> over standard single-mode fiber (G.652). Typical 10G LR modules use a <strong>Laser DFB \u00e0 1310 nm<\/strong> laser (for modern vendor designs) and support digital diagnostics (DOM\/DDM). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical specs (typical ranges):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>D\u00e9bit de donn\u00e9es :<\/strong> 10Gbps.<\/p><\/li><li><p><strong>Wavelength:<\/strong> 1310nm (O-band).<\/p><\/li><li><p><strong>Reach:<\/strong> jusqu\u2019\u00e0 <strong>10\u00a0km<\/strong> sur SMF.<\/p><\/li><li><p><strong>Laser:<\/strong> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/fr\/glossary\/dfb-laser-definition\/\">DFB<\/a> (modern) \u2014 provides narrow linewidth and stable performance for 10G LR.<\/p><\/li><li><p><strong>Consommation \u00e9lectrique :<\/strong> typiquement <strong>&lt;1 W<\/strong> for many SFP+ LR modules (vendor dependent). <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cas d'utilisation courants :<\/strong> server-to-switch uplinks, aggregation links inside campuses, short DCI (within metro). LINK-PP example: <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3110-10c.pdf\"><strong>LS-SM3110-10C<\/strong><\/a> 10G SFP+ LR (1310nm, \u226410 km). <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >3. 1310nm 25G SFP28 LR \u2014 overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is.<\/strong> The 25G SFP28 LR module implements 25GBase-LR optics for single-channel 25 Gb\/s Ethernet over SMF. Like 10G LR, 25G LR modules commonly use a <strong>Laser DFB \u00e0 1310 nm<\/strong> transmitter and are specified for <strong>10\u00a0km<\/strong> reach in LR variants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical specs (typical ranges):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>D\u00e9bit de donn\u00e9es :<\/strong> 25Gbps (25.78125 Gbps line rate).<\/p><\/li><li><p><strong>Wavelength:<\/strong> 1310nm.<\/p><\/li><li><p><strong>Reach:<\/strong> jusqu\u2019\u00e0 <strong>10\u00a0km<\/strong> on SMF (25GBase-LR).<\/p><\/li><li><p><strong>Laser:<\/strong> DFB (narrow linewidth required for stable 25G operation).<\/p><\/li><li><p><strong>Consommation \u00e9lectrique :<\/strong> commonly <strong>~1,0\u20131,5 W<\/strong> depending on vendor and features (DOM, temp grade). <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cas d'utilisation courants :<\/strong> leaf-spine upgrades, server NIC uplinks when 25G bandwidth is required, and future-proofing aggregation links. LINK-PP example: <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3125-10c.pdf\"><strong>LS-SM3125-10C<\/strong><\/a> 25G SFP28 LR (1310nm, \u226410km). <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >4. Technical comparison table (concise)<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 231px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Property<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>10G SFP+ LR (1310nm)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>25G SFP28 LR (1310nm)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Line rate<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Longueur d\u2019onde typique<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Reach (SMF, G.652)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2264 <strong>10\u00a0km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2264 <strong>10\u00a0km<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Laser type<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DFB (modern modules)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DFB<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p><strong>facteur de forme<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP+ (10Gbps)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP28 (25Gbps)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Typical power<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>&lt;1 W (varies)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~1.0\u20131.5 W (varies)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>R\u00e9trocompatibilit\u00e9<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>N\/A (different lane speeds)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Not directly backward compatible with SFP+ ports<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Typical price<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower (per-port)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Higher (but more bandwidth)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >5. When to choose 10G SFP+ LR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong>10G SFP+ LR<\/strong> lorsque :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>10 Gbps per link will serve current traffic demands.<\/p><\/li><li><p>You need the lowest per-port capital cost today.<\/p><\/li><li><p>You have legacy SFP+ sockets or optics inventory you want to reuse.<\/p><\/li><li><p>Power\/thermal budget is tight and &lt;1 W optics are preferred.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Use cases: stable enterprise links, some DCI links that do not demand higher throughput. Vendor-verified <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">LINK-PP LS-SM3110-10C<\/a> is a standard, cost-effective 10G LR option.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >6. When to choose 25G SFP28 LR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong>25 G SFP28 LR<\/strong> lorsque :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Higher per-server or per-leaf bandwidth is required (e.g., modern NICs at 25G).<\/p><\/li><li><p>You want to future-proof the network to reduce port counts or aggregation layers.<\/p><\/li><li><p>Slightly higher power and cost are acceptable in exchange for a 2.5\u00d7 bandwidth increase.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Use cases: greenfield data center upgrades, leaf uplinks for high-throughput servers. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\">LINK-PP\u2019s LS-SM3125-10C<\/a> provides 25G performance in the SFP28 form factor, suitable for 10km SMF links.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >7. Cost vs future upgrade \u2014 practical guidance<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Short-term cost sensitivity:<\/strong> 10G SFP+ often has a lower unit price and lower power per port, making it attractive when budgets are tight.<\/p><\/li><li><p><strong>Long-term TCO:<\/strong> If projected traffic growth will require &gt;10 Gbps per link within a short horizon, 25G may reduce switch port counts and layering complexity\u2014saving money long term despite higher optics cost.<\/p><\/li><li><p><strong>Inventory &amp; interoperability:<\/strong> Confirm switch\/router port compatibility. SFP28 ports are not electrically compatible with SFP+ without specific support; verify with vendors or use mixed-speed platforms if needed.<\/p><\/li>\n<\/ul>\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\/28c61dc626bc4808bd999a1af4a3817a.webp\" alt=\"LINK-PP 1310nm SFP Module for 10km\" class=\"wp-image-5095\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >8. LINK-PP product recommendations<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>10G SFP+ LR (1310nm, \u226410 km):<\/strong> <strong>LS-SM3110-10C<\/strong> \u2014 LINK-PP 10GBASE-LR module, DFB transmitter, DOM support, listed for \u226410km SMF. <\/p><\/li><li><p><strong>25G SFP28 LR (1310nm, \u226410 km):<\/strong> <strong>LS-SM3125-10C<\/strong> \u2014 LINK-PP 25GBase-LR SFP28 for 25Gbps up to 10km on SMF, low power design and interoperability claims on the product page. <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Always validate the LINK-PP datasheet for exact Tx power, Rx sensitivity, and digital diagnostic specifications before final procurement. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">LINK-PP lists<\/a> stock\/availability on the product pages and offers technical support for compatibility checks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >9. Practical checklist before purchase<\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Confirm required line rate<\/strong> (10G vs. 25G).<\/p><\/li><li><p><strong>Measure physical distance<\/strong> and include the connector\/splice loss margin for 10 km links.<\/p><\/li><li><p><strong>Check switch\/router port type<\/strong> (SFP+ vs. SFP28) and vendor compatibility.<\/p><\/li><li><p><strong>Decide on temperature grade<\/strong> (commercial vs. industrial).<\/p><\/li><li><p><strong>Review datasheet values:<\/strong> Tx power, Rx sensitivity, DOM, laser type, and power consumption.<\/p><\/li><li><p><strong>Ask for samples or interoperability reports<\/strong> from the supplier (LINK-PP offers <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3110-10c.pdf\">datasheets<\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/message.htm\">Un point de comparaison courant est le<\/a>). <\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" >10. Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For 10km single-mode fiber links, both <strong>10G SFP+ LR<\/strong> and <strong>25 G SFP28 LR<\/strong> sur <strong>1310 nm<\/strong> are established options. Choose 10G when initial cost and low power are priorities; choose 25G when you need higher bandwidth and a more future-ready design. For tested, compatible modules and technical support, consider LINK-PP\u2019s <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">LS-SM3110-10C<\/a> (10G) and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\">LS-SM3125-10C<\/a> (25G).<\/p>\n\n\n\n<div><div widgetid=\"923ea2778f9c11f0be050a37e7beaac1\" format=\"embedded\" data-widget-id=\"923ea2778f9c11f0be050a37e7beaac1\" 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>Comparez les transceivers 10G SFP+ LR et 25G SFP28 LR 1310 nm pour des liaisons en fibre monomode (SMF) sur 10 km. D\u00e9couvrez les diff\u00e9rences de d\u00e9bit, de consommation \u00e9nerg\u00e9tique, de type de laser, de co\u00fbt et les cas justifiant une mise \u00e0 niveau. Explorez les mod\u00e8les LINK-PP.<\/p>","protected":false},"author":1,"featured_media":5096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[14,16,26],"class_list":["post-5097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-10g-sfp-transceivers","tag-link-pp-25g-sfp28-optical-modules","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/posts\/5097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/comments?post=5097"}],"version-history":[{"count":4,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/posts\/5097\/revisions"}],"predecessor-version":[{"id":11375,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/posts\/5097\/revisions\/11375"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/media\/5096"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/media?parent=5097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/categories?post=5097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/fr\/wp-json\/wp\/v2\/tags?post=5097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}