Reliable Legacy and Entry-Level Optical Solutions – 1G to 4G Transceivers

Trxcom offers a wide range of 1G, 2.5G, and 4G optical transceiver modules tailored for legacy network systems, industrial applications, and access-layer deployments. Our portfolio includes standard 1000BASE-SX, 1000BASE-LX, and 1000BASE-ZX SFP modules for multimode and single-mode fiber, as well as BiDi SFPs, CWDM/DWDM variants, and specialized SONET/SDH and Fibre Channel models.

Designed for compatibility with Cisco GLC-SX-MMD and other major brands, these modules support hot-swapping, digital diagnostics (DDM), and operate at wavelengths from 850nm to 1550nm. Whether you're upgrading enterprise networks, connecting telecom edge equipment, or maintaining legacy fiber links, Trxcom ensures stable and cost-effective connectivity across 1X9, SFF, and SFP form factors.

All modules undergo rigorous compatibility testing with popular switches, routers, and media converters. With extended temperature support and long-term product availability, Trxcom helps extend the life cycle of existing fiber infrastructures.

Frequently Asked Questions about 1/2/4G Optical Transceivers

• Q: What's the difference between 1G SFP and BiDi SFP modules
  A: BiDi SFP modules transmit and receive signals over a single fiber using different wavelengths, while standard 1G SFPs use two separate fibers — one for transmitting and one for receiving.

• Q: Are CWDM and DWDM SFP modules available for 1G fiber networks?
  A: Yes. 1G CWDM and DWDM SFP modules are available in various wavelengths from 1270nm to 1610nm, suitable for access and metro networks needing multiple wavelength multiplexing.

• Q: Are Trxcom modules compatible with Cisco GLC-SX-MMD?
  A: Absolutely. Trxcom offers fully compatible 1G SFP transceivers that match Cisco GLC-SX-MMD in performance, DDM support, and form factor, but at more competitive pricing.