Custom 50G QSFP28 Optical Transceiver

Product Description

The Custom 50G QSFP28 SMF module is a specialized solution for transitional network architectures. While SFP56 is the modern 50G standard, many enterprise core switches utilize QSFP28 ports designed for 100G. This module allows network engineers to establish a stable 53.125Gbps PAM4 link using existing QSFP28 slots. Manufactured in WolonFiber's Wuhan facility, each unit is 100% 3D interferometer tested and live-traffic verified to ensure carrier-grade uptime over long-haul metropolitan distances.

Key Features

• Active Thermal Control: Advanced heat dissipation pads and TEC cooling allow the module to maintain signal integrity even under high-power (ZR) operation.

• FEC Integration: Fully optimized for host-side KP4 Forward Error Correction to guarantee zero bit-error-rates over 40km-80km spans.

• Multi-Vendor Compatibility: Seamlessly recognized by Cisco, Arista, and Juniper hardware via custom-written firmware.

Application Scenarios

• Long-distance Metropolitan Area Network (MAN) links between legacy 100G switch nodes.

• High-bandwidth unamplified interconnects for remote disaster recovery sites.

Technical Specifications (Based on ZR 80km Capacity Benchmarks)

Engineering FAQs

• Q: Is this 50g qsfp28 module the same as a 100G module?
  A: No. While they share the same physical port size, the signaling is 50G PAM4. It is designed for links that require a 50GbE rate on a QSFP28 hardware interface.

• Q: When comparing qsfp+ vs qsfp28, can I use this in a 40G port?
  A: No. A 40G QSFP+ port cannot handle the high-frequency 25G/lane or 50G PAM4 electrical signaling required by this qsfp28 module.

• Q: People often ask, is qsfp28 compatible with qsfp+?
  A: Physically, yes. Logically, it depends on the switch. Most QSFP28 ports can accept 40G modules (backward compatibility), but 40G ports cannot accept 50G/100G QSFP28 modules.

• Q: Why does the ZR version of this module draw 6W?
  A: The high electrical draw is due to the TEC (cooling) required to stabilize the EML laser and the DSP chip needed to process long-distance PAM4 signals.