25G BiDI SFP28 10km Transceiver

The core technological breakthrough of the C-LIGHT 25G BiDi SFP28 10km optical transceiver lies in its single‑fiber bidirectional transmission capability. Unlike traditional dual‑fiber bidirectional transceivers that require two separate fibers for transmitting and receiving respectively, BiDi technology ingeniously enables two‑way communication over a single fiber.

This implementation relies on the principle of Wavelength Division Multiplexing (WDM). The module integrates specialized optical components internally, with the transmitter and receiver operating at different wavelengths: typically, one end uses a 1270 nm wavelength for transmission and 1330 nm for reception, while the opposite end uses 1330 nm for transmission and 1270 nm for reception. This wavelength allocation strategy allows optical signals traveling in both directions to propagate through the same fiber without interfering with each other. Optical filters further ensure that each port receives only signals of the specific wavelength, effectively isolating spontaneous emission noise and reflection interference.

Core Features: Perfect Balance of Performance and Reliability  

The C-LIGHT 25G BiDi SFP28 10km optical module excels in multiple key performance indicators:

Transmission Performance: Supports data rates up to 25.78 Gbps, fully compatible with 25G Ethernet and 32G Fibre Channel standards. Over a 10‑km single‑mode fiber link, the bit error rate is below 1E‑12, ensuring high reliability of data transmission.

Temperature Adaptability: Designed for an industrial temperature range (-40 °C to 85 °C), it operates stably in extreme environments, meeting the demands of harsh application scenarios such as outdoor base stations and industrial Internet.

Power Consumption Control: Incorporating advanced DSP technology and low‑power circuit design, its typical power consumption is below 1.5 W—approximately 30% lower than traditional dual‑fiber solutions—aligning with the trend toward green data centers.

Compatibility and Diagnostics: Fully compliant with the SFP28 MSA protocol and supporting Digital Diagnostic Monitoring (DDM), it enables real‑time monitoring of key parameters such as optical power, temperature, and voltage, facilitating network maintenance and troubleshooting.

Advantages of the 25G BiDi SFP28 10km Optical Module

5G Mobile Communication Networks: In 5G fronthaul networks, connections between base stations and distributed units require high‑bandwidth, low‑latency solutions. The single‑fiber characteristic of BiDi can effectively reduce fiber resource consumption by 50%, significantly lowering 5G network deployment costs. This advantage is especially prominent in urban areas where fiber resources are limited.

Data Center Interconnect: Bandwidth demands for interconnections within and between modern data centers continue to grow. The 25G BiDi module offers a cost‑effective connectivity solution for distances up to 10 km, suitable for spine‑leaf architecture connections inside data centers and for inter‑data‑center links within metropolitan areas.

Enterprise and Campus Networks: Large enterprise campuses and university networks often need to connect multiple buildings over distances of several kilometers. BiDi technology not only reduces fiber usage but also simplifies cabling structures, lowering network complexity and maintenance costs.

Video Surveillance and Broadcast Transmission: High‑definition video surveillance networks and broadcast television transmission systems require stable, reliable high‑bandwidth connections. The single‑fiber feature of the 25G BiDi module is particularly well‑suited for long‑distance, multi‑point video signal backhaul.

Why Choose the 25G BiDi Solution?  

Compared with traditional dual‑fiber optical modules, the C-LIGHT 25G BiDi SFP28 10km demonstrates multiple competitive advantages:

Fiber Resource Savings: Its greatest advantage is reducing fiber consumption by 50%, which is especially valuable in scenarios with limited fiber resources or restricted cabling space. For existing networks requiring expansion, bandwidth upgrades can be achieved without laying new fibers.

Lower Deployment Costs: Reducing fiber usage not only saves material costs but also decreases the complexity and expenses associated with conduit occupancy, cabling installation, and ongoing maintenance. Overall deployment costs can be 30%–40% lower than with traditional solutions.

Simplified Network Architecture: Single‑fiber bidirectional transmission simplifies patch‑panel and connector configurations, reduces potential failure points, and improves network reliability. The network topology becomes clearer, easing management and maintenance.

Backward Compatibility: The module design considers compatibility with existing 10G BiDi systems, supporting smooth upgrades and protecting customers’ previous investments.

Environmental Adaptability: Its industrial temperature range enables deployment in harsh environments such as outdoor cabinets and mobile base stations, extending the application boundaries.