{"title":"Optical Modules","description":"\u003ch2\u003eLight Moves Faster Than Copper. So Should Your Data.\u003c\/h2\u003e\n\n\u003cp\u003eAt the speeds modern AI clusters operate — 100G, 400G, 800G per link — copper has its limits. Distance, signal integrity, power consumption, and electromagnetic interference all become real engineering constraints the moment you're running high-speed links across a data center floor or between racks. Optical transceivers solve these problems by converting electrical signals to light, transmitting them over fiber, and converting them back — with lower latency, lower power per bit, and the ability to span distances that copper simply cannot.\u003c\/p\u003e\n\n\u003cp\u003eBut not all optical modules are created equal. Compatibility between transceiver and host platform is the critical variable that determines whether a module works reliably or causes intermittent link failures that are nearly impossible to diagnose. DVUN's optical module collection is built around verified multi-vendor compatibility — every module in our catalog is tested against the switch and NIC platforms it will be used with, so you're not discovering incompatibilities after the rack is built.\u003c\/p\u003e\n\n\u003ch3\u003eUnderstanding the Optical Module Landscape\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSFP+ (10GbE):\u003c\/strong\u003e The workhorse of legacy and management network connections. Still widely used for out-of-band management and lower-speed access links.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQSFP28 (100GbE):\u003c\/strong\u003e The current standard for 100G links in AI cluster leaf switching and server NIC connections. Available in SR4, LR4, and CWDM4 variants for different reach requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQSFP-DD (200G \/ 400GbE):\u003c\/strong\u003e Double-density QSFP form factor for 200G and 400G links. The dominant form factor for modern AI spine switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOSFP (400G \/ 800GbE):\u003c\/strong\u003e Octal Small Form Factor Pluggable — the emerging standard for 800G links in next-generation AI cluster fabrics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiDi Modules:\u003c\/strong\u003e Bidirectional transceivers that use a single fiber strand for both transmit and receive, doubling the effective capacity of existing fiber infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreakout Modules:\u003c\/strong\u003e QSFP-DD to 4x SFP28 or 8x SFP28 breakout configurations for connecting multiple lower-speed devices to a single high-speed switch port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReach Variants Explained\u003c\/h3\u003e\n\u003cp\u003eChoosing the right reach variant is as important as choosing the right speed. \u003cstrong\u003eSR (Short Reach)\u003c\/strong\u003e modules use multimode fiber and are optimized for intra-rack and inter-rack connections up to 100m — the right choice for most AI cluster environments. \u003cstrong\u003eLR (Long Reach)\u003c\/strong\u003e modules use single-mode fiber for connections up to 10km, suited for campus or multi-building deployments. \u003cstrong\u003eCWDM4 and PSM4\u003c\/strong\u003e variants offer intermediate reach options for larger data center environments. See our \u003ca href=\"\/collections\/dac-aoc-cables\"\u003eDAC \/ AOC Cables\u003c\/a\u003e for copper-based alternatives for very short reach connections.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; Quality Standards\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-vendor compatibility verified against major switch and NIC platforms\u003c\/li\u003e\n\u003cli\u003eMSA (Multi-Source Agreement) compliant form factors\u003c\/li\u003e\n\u003cli\u003eDigital Diagnostic Monitoring (DDM\/DOM) on all modules for real-time link health visibility\u003c\/li\u003e\n\u003cli\u003eOperating temperature: commercial (0–70°C) and industrial (-40–85°C) grades available\u003c\/li\u003e\n\u003cli\u003eFCC, CE, and RoHS certified\u003c\/li\u003e\n\u003cli\u003eSpeeds: 10G, 25G, 40G, 100G, 200G, 400G, 800G\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Right Module for Every Link in Your Fabric\u003c\/h3\u003e\n\u003cp\u003eOptical modules are one of the most frequently misspecified components in AI cluster builds — and one of the easiest to get right with the right supplier. DVUN's optical module catalog covers every speed, form factor, and reach variant you need to build a complete AI cluster fabric. \u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote\u003c\/a\u003e for bulk module orders, or contact our team for a fiber plant compatibility review before you order.\u003c\/p\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/0525\/9582\/collections\/optical-modules.png?v=1782104235","url":"https:\/\/dvun.com\/collections\/optical-modules.oembed","provider":"DVUN","version":"1.0","type":"link"}