155M WDM SFP BIDI Module Sourcing Guide

The market for 155M WDM (Bi-Directional) SFP modules is characterized by its stability in legacy telecommunications and its growing importance in 5G fronthaul and industrial networking. While higher-speed transceivers dominate data centers, the 155M WDM segment is essential for long-range bridging (up to 160km) and cost-efficient single-fiber utilization, with the broader market projected to reach $9.82 billion by 2026.

I have synthesized a comprehensive market report and a detailed product list to help you understand technical specifications, regional growth drivers (specifically in China), and current sourcing options.

Key Market Insights

* Capacity Efficiency: BIDI WDM technology is a primary driver for cost reduction, as it doubles fiber capacity by allowing two-way traffic on a single strand.

* Sector Growth: The PoE switch market, which heavily utilizes these SFP modules for security and industrial IoT, is forecasted to hit $10 billion by 2026.

* Pricing Trends: Standard 20km modules are widely available at $4.50–$8.00 per unit, while long-haul 80km+ variants range from $20–$96 depending on sensitivity and vendor compatibility.

The deliverables below provide the full analysis and a filtered product sourcing list.