OC-3 BiDi SFP 40km Transceiver (Side A): BIDI-155M-SFP-40-AD

Our EDGEOPTIC BIDI-155M-SFP-40-AD is a multi-vendor compatible OC-3/STM-1 bidirectional SFP optical module designed for long-reach Fast Ethernet and SDH/SONET applications operating over single-mode fiber infrastructure. This BiDi transceiver enables cost-effective fiber utilization by transmitting and receiving on a single fiber strand, making it an excellent choice for metropolitan network deployments and inter-site connections where extended reach and fiber conservation are equally important considerations while supporting established 100M and 155M protocol standards.

The BIDI-155M-SFP-40-AD module operates at 1310nm wavelength for transmission and 1550nm for reception, supporting data rates from 100 to 155 Mbps. This Side A transceiver must be deployed in matched pairs with its complementary Side B unit (transmitting at 1550nm, receiving at 1310nm) to establish bidirectional communication over a single fiber strand. Our OC-3 BiDi SFP transceiver utilizes FP (Fabry-Pérot) laser technology for transmission and PIN photodiode for signal reception. The module ensures a 24 dB guaranteed optical link budget, supporting transmission distances up to 40 kilometers over standard single-mode fiber. However, distance remains an indicative parameter calculated for ease of identification – actual reach depends on minimal optical budget requirements and real-world attenuation characteristics of the installed fiber plant.

The BIDI-155M-SFP-40-AD is a hot-pluggable SFP module featuring a single LC/UPC connector as the optical interface. The electrical interface conforms to INF-8074i and SFP MSA (Multi-Source Agreement) specifications, ensuring compatibility with standard SFP host systems across multiple vendor equipment platforms. Our OC-3 BiDi SFP transceiver can be encoded for compatibility with 80+ equipment brands, enabling seamless integration into existing network infrastructure. The module incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time operational parameters including transmitted and received optical power levels, module temperature, laser bias current, and supply voltage. This diagnostic data is accessible via MSA-compatible EEPROM interface, enabling comprehensive monitoring of transceiver health and performance.

The SFP form factor, while considered a legacy standard, remains widely deployed across enterprise, carrier, and industrial networks due to its proven reliability, broad equipment support, and cost-effectiveness for sub-Gigabit applications. The OC-3/STM-1 data rate continues to serve critical roles in telecommunications infrastructure, particularly in SDH/SONET transport networks, legacy carrier access systems, and 100M Ethernet applications where higher bandwidth is not required but long-reach connectivity is essential. The module operates within a standard 0°C to 70°C commercial temperature range, with appropriate thermal considerations for sustained operation in controlled equipment room environments. Power requirements are met by a single +3.3V supply.

Standards compliance includes IEEE 802.3ah for 100BASE-BX Fast Ethernet along with SDH/SONET OC-3/STM-1 (155Mbps) support. The transceiver achieves multi-vendor interoperability through adherence to industry MSA standards, though equipment with vendor-specific module validation may require custom EEPROM programming for full compatibility. Our OC-3 BiDi SFP transceiver is CE and RoHS certified, meeting Class 1 FDA and IEC60825-1 laser safety requirements.

Typical applications include metropolitan telecommunications access networks, legacy SDH/SONET ring infrastructure, regional Fast Ethernet connectivity, and carrier access systems requiring long-reach single-fiber connectivity. Because our focus is providing top quality service, we perform rigorous quality checks before delivery. This includes optical parameter measurements, connector cleanliness inspection, and SFP transceiver EEPROM memory data validation tests.