25G BiDi SFP28 10km Industrial Transceiver (Side B): BIDI-25G-SFP28-10BI

Our EDGEOPTIC BIDI-25G-SFP28-10BI is a multi-vendor compatible industrial-grade 25G BiDi SFP28 single-fiber optical module designed for 25 Gigabit Ethernet applications in harsh environmental conditions. The BIDI-25G-SFP28-10BI module transmits at 1330nm wavelength and receives at 1270nm wavelength, with data rates from 8.5 to 28.1 Gbps supporting multiple protocol standards and applications. Our industrial 25G BiDi SFP28 transceiver utilizes DML (Directly Modulated Laser) technology for transmission and APD (Avalanche Photodiode) for receiving, engineered specifically for enhanced receiver sensitivity in bidirectional communication over single fiber in extreme temperature environments.

The transceiver ensures a 7 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 bidirectional transmission up to 10 kilometers, making it ideal for outdoor installations, industrial campus networks, and fiber-constrained infrastructure in harsh conditions. 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 robust BiDi architecture with APD receiver technology provides superior performance across extreme temperature variations, requiring pairing with the complementary BIDI-25G-SFP28-10AI module for proper operation.

BIDI-25G-SFP28-10BI compatible industrial BiDi module is hot-pluggable SFP28 with single LC/UPC connector as an optical interface, reducing fiber infrastructure requirements by 50% while meeting stringent industrial reliability standards. The electrical interface conforms to SFF-8431 and SFF-8432 MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard SFP28 host systems supporting multiple vendor equipment platforms. Our industrial 25G BiDi 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 per SFF-8472 specifications, enabling continuous monitoring of bidirectional performance across extreme temperature variations.

The module operates within an extended industrial temperature range of -45°C to +85°C, with maximum power consumption of 1.2W, specifically designed for deployment in uncontrolled environments including outdoor cabinets, remote cell sites, industrial facilities, and transportation infrastructure. The enhanced thermal design ensures stable DML laser operation at 1330nm with output power from -4 to 4 dBm and maintains the 3.5 dB minimum extinction ratio across the entire temperature spectrum. The APD photodiode receiver delivers enhanced sensitivity of -11 dBm at 1270nm even at temperature extremes, providing superior performance compared to PIN-based alternatives. The 20nm receiver wavelength bandwidth ensures proper channel isolation between transmit and receive paths. Standards compliance includes IEEE 802.3cc specifications for 25 Gigabit Ethernet, supporting both 10G Ethernet (10.31 Gbps) and 25G Ethernet (25.78 Gbps) applications.

Our industrial 25G BiDi SFP28 transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards. Typical applications include outdoor wireless backhaul systems, industrial automation networks, smart grid communications, mining operations, and oil and gas facilities where fiber availability is limited and environmental conditions are challenging. The combination of BiDi technology and APD receiver makes it particularly suitable for harsh environment deployments requiring maximum sensitivity and fiber efficiency. The multi-rate capability accommodates legacy 10 Gigabit Ethernet operation alongside native 25 Gigabit rates, providing operational flexibility for mixed-speed network deployments in extreme conditions. Because our focus is providing top quality service, we perform extensive environmental testing including thermal cycling, vibration resistance, humidity exposure tests, APD bias stability verification, wavelength isolation testing, in addition to optical parameter measurements, connector cleanliness tests, and SFP28 transceiver EEPROM memory data validation tests.