Price of 155m Optical Module

A 155M SFP optical module typically costs between $50 and $200, depending on type, distance, and features.Pricing Overview155M SFP transceivers are low-speed optical modules designed for 155 Mbps transmission in SDH STM-1 and SONET OC-3 networks . Despite being older technology, they are still actively purchased for industrial, telecom, and utility networks where stability and long lifecycle are prioritized over high speed . The cost of a 155M SFP module varies based on several factors:Type of module: Standard duplex SFPs are generally less expensive, while BiDi (bi-directional) SFPs or CWDM SFPs with wavelength multiplexing are more costly due to additional components and complexity .Transmission distance: Modules supporting longer distances (e.g., 80–120 km) typically cost more than short-reach modules (10–20 km), .Wavelength and compatibility: Modules with specific wavelength pairs or tested compatibility with multiple OEMs may carry a premium .Features: Enhanced features like digital diagnostic monitoring (DDMI) or DFB lasers for long-distance CWDM applications increase the price .Typical Price RangeStandard 155M SFP (short to medium reach, 10–40 km): $50–$100 per module .Long-reach 155M SFP (80–120 km, single-mode fiber): $120–$200 per module .BiDi 155M SFP (single-fiber, 10–120 km): $100–$180 depending on wavelength and distance .SummaryWhile exact prices vary by vendor and region, most 155M SFP modules fall within the $50–$200 range, with higher costs for long-distance, BiDi, or CWDM variants. For precise pricing, it is recommended to check vendor websites or request quotes from suppliers such as Optcore, SOMI Networks, MEFiber, or Skywardtel .