40G BiDi QSFP+ 150m MMF Transceiver: BIDI-40G-QSFP-150

Our EDGEOPTIC BIDI-40G-QSFP-150 is a multi-vendor compatible 40G BiDi QSFP+ optical transceiver module designed for high-speed 40 Gigabit Ethernet applications over multimode fiber infrastructure using innovative bidirectional technology. The BIDI-40G-QSFP-150 module operates with dual wavelengths at 850nm and 900nm for simultaneous transmission and reception over a single fiber pair, supporting data rates up to 41.25 Gbps across various network protocols and applications. Our 40G BiDi QSFP+ transceiver utilizes VCSEL (Vertical-Cavity Surface-Emitting Laser) technology for transmission and PIN photodiode receivers, optimized for duplex fiber connectivity in data center environments.

The transceiver delivers a 2 dB guaranteed optical link budget, which determines the maximum transmission distance capabilities. Over OM4 and OM5 multimode fiber, the module reliably achieves distances up to 150 meters, while OM3 cabling supports approximately 100 meters using only two fibers instead of the traditional eight required by standard 40GBASE-SR4. However, distance is just an indicative parameter calculated for convenience of identification – ultimately we calculate distance considering minimum optical budget and average attenuation of optical cabling in the industry.

BIDI-40G-QSFP-150 compatible BiDi module features hot-pluggable QSFP+ form factor with duplex LC/UPC connectors, dramatically simplifying fiber infrastructure by reducing fiber count by 75% compared to parallel optics solutions. The bidirectional design transmits and receives on different wavelengths over the same fiber, with each channel utilizing dual 850/900nm wavelength division multiplexing. The electrical interface conforms to INF-8438i and SFF-8436 MSA (Multi-Source Agreement) specifications, ensuring seamless compatibility with standard QSFP+ host systems across multiple vendor equipment platforms. Our 40G BiDi QSFP+ transceiver can be encoded to be compatible and successfully operate in over 80 different brands of networking equipment.

The module incorporates comprehensive DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time operational parameters including transmitted and received optical power levels per wavelength, module temperature, laser bias current, and supply voltage monitoring. The BiDi architecture enables significant fiber infrastructure savings, particularly valuable in fiber-constrained environments where traditional parallel optics would require extensive cabling upgrades. This diagnostic information is accessible via MSA-compatible EEPROM interface, enabling proactive network management and performance optimization. Operating within a standard 0 to 70°C temperature range with single +3.3V power supply, the module ensures reliable performance in controlled data center environments.

Standards compliance encompasses IEEE 802.3ba for 40 Gigabit Ethernet, alongside OTU3/OTU3e2 support at 43.01/44.58 Gbps for Optical Transport Networks and STM-256 compatibility for SDH/SONET applications at 39.81 Gbps. The transceiver achieves broad multi-vendor interoperability through strict adherence to QSFP+ MSA standards, though equipment with vendor-specific module authentication may require custom EEPROM programming for seamless compatibility. Our BIDI-40G-QSFP-150 transceiver is CE/RoHS certified and compliant with Class 1 FDA and IEC60825-1 laser safety standards.

Typical deployment scenarios include fiber-constrained data centers, legacy infrastructure upgrades, high-density switching environments, and applications requiring simplified patch panel configurations. The duplex LC connectivity with bidirectional technology maximizes existing fiber utilization, enabling 40G upgrades without additional fiber installation. Because our focus is providing superior quality service, we perform rigorous quality checks before delivery including bidirectional optical power validation, wavelength verification, connector cleanliness inspection, and QSFP+ transceiver EEPROM memory data testing.