Direct Sales of 40G Active Optical Modules

40G QSFP+ optical modules are available for direct purchase from multiple suppliers, offering a range of short- and long-reach solutions for data centers and enterprise networks.

Key Suppliers and Options

• FS.com offers a full range of 40G QSFP+ transceivers with transmission distances from 150 meters to 80 kilometers, suitable for high-density switching, routing, and data center applications. They provide nearby warehouse shipping, 30-day free returns, and are trusted by over 260,000 enterprise users .
• UnitekFiber is a global optical transceiver wholesaler providing MSA-compliant 40G QSFP+ modules, along with 10G, 100G, and 400G options. Their modules are engineered for low latency, high reliability, and full compatibility with major OEM hardware. They also offer 40G DAC and AOC cables for short-distance interconnects, breakout cables, and high-speed data transmission solutions .
• WolonFiber manufactures custom 40G QSFP+ modules optimized for mission-critical telecom and campus deployments. Their modules feature advanced PAM4 DSP technology, thermal optimization, and precision coding for seamless interoperability with Cisco, Arista, Huawei, and Nokia equipment. They support multimode and single-mode fibers with distances from 150 meters to 2 kilometers, and offer breakout and CWDM solutions for high-density deployments .
• Fiberwdm.com provides 40G QSFP+ ER4, LR4, and BIDI modules supporting 40Gb/s transmission over single-mode fiber up to 40 km. These modules are IEEE 802.3ba compliant, QSFP MSA certified, and include built-in digital diagnostics, making them suitable for high-speed IDC connections and migration from 10G infrastructures .

Considerations for Direct Purchase

• Compatibility: Ensure modules are MSA-compliant and tested for interoperability with your existing switches and routers.
• Reach and Fiber Type: Choose between multimode (MMF) for short distances and single-mode (SMF) for longer distances.
• Cabling Options: DAC cables are cost-effective for <10m connections, while AOC cables and breakout cables support higher density and longer distances.
• Customization: Some suppliers offer bespoke coding, thermal stress testing, and CWDM options for complex deployments. Direct sales from these suppliers allow enterprises to upgrade to 40G Ethernet efficiently, reduce switch congestion, and scale data center bandwidth without overhauling existing fiber infrastructure .