RUIJIE GE-SFP-LX20-SM1550-BIDI - 1G SFP SM

The Ruijie GE‑SFP‑LX20‑SM1550‑BIDI is a high‑performance 1G bi‑directional (BiDi) single‑fibre SFP transceiver engineered to deliver reliable Gigabit Ethernet connectivity over long‑reach optical links while significantly reducing fibre usage. Designed for environments where fibre availability is limited or costly, this module enables full‑duplex Gigabit transmission over a single strand of single‑mode fibre, making it ideal for campus networks, industrial sites, metro access layers, CCTV backhaul and enterprise uplinks.

Operating at 1.25 Gbps (1000BASE‑LX), the GE‑SFP‑LX20‑SM1550‑BIDI uses 1550 nm transmit and 1310 nm receive wavelengths, paired with a complementary module at the remote end (TX1310/RX1550) to establish a stable single‑fibre link. It supports distances of up to 20 km over single‑mode fibre (SMF) using a simplex LC connector, fully aligned with IEEE 802.3z optical specifications.

Built to the SFP MSA form factor, the module is hot‑pluggable, allowing quick installation or replacement without service interruption. It features a DFB laser transmitter, PIN photodiode receiver, and low power consumption of ≤ 1.5 W, making it ideal for high‑density switch deployments.

The GE‑SFP‑LX20‑SM1550‑BIDI supports Digital Diagnostics Monitoring (DDM/DOM), enabling real‑time monitoring of optical power, temperature, voltage and other critical parameters. This enhances network visibility and simplifies troubleshooting across distributed fibre networks.

Engineered for commercial‑grade environments, the module operates reliably from 0°C to 70°C, making it suitable for wiring closets, campus distribution points and industrial cabinets. Optical performance is robust, with typical receiver sensitivity below –20 dBm, ensuring stable operation even under challenging fibre conditions.

Safety and compliance are ensured through Class 1 laser certification, RoHS, CE, EMC, FCC, and REACH adherence, meeting international standards for optical networking equipment. The module conforms to IEEE 802.3z, SFF‑8472, SFF‑8431, SFF‑8432, and the SFP MSA, ensuring broad compatibility with Ruijie switches and other vendor hardware.

Compact, efficient and fibre‑saving, the GE‑SFP‑LX20‑SM1550‑BIDI is ideal for long‑range single‑fibre uplinks in campus networks, industrial sites, metro access layers and enterprise switching environments. It provides a dependable, plug‑and‑play solution for expanding Gigabit optical connectivity while reducing fibre infrastructure costs and maintaining excellent performance and long‑term reliability.GE