25G LWDM SFP28 40km Industrial Transceiver: LWDM-25G-SFP28-40I

Our EDGEOPTIC LWDM-25G-SFP28-40I is a multi-vendor compatible 25G LWDM SFP28 dual-fiber optical module designed for long-haul LAN-WDM 25 Gigabit Ethernet applications operating over single-mode fiber cabling. The LWDM-25G-SFP28-40I module supports transmission across 8 LWDM channels (277-309) in the 1260-1360nm wavelength grid, with data rates from 2.46 to 25.78 Gbps supporting multiple protocol standards and applications. Our 25G LWDM SFP28 transceiver utilizes EML (Electro-absorption Modulated Laser) technology for transmission and APD (Avalanche Photodiode) for receiving, delivering exceptional reach and sensitivity for LAN-WDM deployments in metropolitan and regional networks.

The transceiver ensures a 24 dB guaranteed optical link budget with host-based Forward Error Correction (FEC) support, which determines the maximum transmission distance capabilities. Over standard single-mode fiber (SMF), the module achieves reliable transmission up to 40 kilometers, making it ideal for LWDM-based metro networks, 5G fronthaul deployments, and service provider infrastructure requiring simplified wavelength management with extended reach. However, distance is just an indicative parameter calculated for convenience of identification – eventually we calculate distance taking into account minimal optical budget and average attenuation of optical cabling in industry standards. The LWDM architecture provides cost-optimized wavelength division multiplexing with wider channel spacing than DWDM, simplifying optical component requirements while maintaining exceptional reach.

LWDM-25G-SFP28-40I compatible long-haul LWDM module is hot-pluggable SFP28 with duplex LC/UPC connectors as an optical interface. The electrical interface conforms to INF-8074i, CPRI-3/5/7, IEEE 802.3, and SFP28 MSA specifications, ensuring compatibility with standard SFP28 host systems supporting multiple vendor equipment platforms. Our 25G LWDM SFP28 transceiver can be encoded to be compatible and successfully operate in different 80+ brands of equipment. The module incorporates comprehensive DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time information including transmitted and received optical power levels, module temperature, bias current, and supply voltage. This diagnostic data is available via MSA-compatible EEPROM interface, enabling continuous monitoring of LWDM channel performance critical for long-haul applications.

The module operates within a 0 to 70°C temperature range with maximum power consumption of 1.8W, optimized for deployment in controlled environment data centers and telecom facilities. The EML laser technology provides exceptional output power from -3 to 6 dBm with outstanding extinction ratio of 7 dB minimum, ensuring superior signal quality and chromatic dispersion tolerance over 40km distances. The APD photodiode receiver delivers remarkable sensitivity of -27 dBm with precise 2.1nm LAN WDM wavelength bandwidth, crucial for maintaining signal integrity across extended spans while providing adequate channel isolation. The CPRI-3/5/7 compliance makes it particularly suitable for mobile fronthaul applications. The transceiver achieves multi-vendor interoperability through adherence to industry standards, though equipment with vendor-specific module validation may require custom EEPROM programming for compatibility.

Our 25G LWDM SFP28 40km transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards. Typical applications include 5G fronthaul networks leveraging CPRI capabilities, metro access LWDM systems, mobile backhaul infrastructure, data center interconnects requiring extended reach, and service provider networks seeking simplified WDM deployment. The LWDM technology with 8 channels provides 200 Gbps aggregate capacity while maintaining simpler optical requirements compared to dense wavelength systems. The multi-rate capability from 2.46 Gbps accommodates various CPRI rates alongside 10G Ethernet (10.31 Gbps) and 25G Ethernet (25.78 Gbps) applications, providing exceptional versatility for converged networks. Because our focus is providing top quality service, we perform rigorous quality checks before delivery including optical parameter measurements across all LWDM channels, wavelength accuracy verification, APD sensitivity validation, connector cleanliness tests, and SFP28 transceiver EEPROM memory data validation tests, ensuring reliable 40km transmission at the specified LWDM wavelength.