RAD EOLS-1312-10-D SFP Transceiver

The RAD EOLS-1312-10-D is a hot-pluggable SFP (Small Form-factor Pluggable) optical transceiver module designed for Gigabit Ethernet, Fibre Channel, and compatible SDH/SONET applications in RAD and third-party multiservice platforms. It provides a bidirectional optical interface operating at data rates up to 1.25 Gbit/s.This module operates at a nominal wavelength of 1310 nm using a Fabry-Perot (FP) laser transmitter and a PIN photodiode receiver. It is optimized for single-mode fiber (SMF 9/125 µm) with a typical transmission distance of up to 10 km. The optical link budget supports reliable performance with low bit error rates (better than 10⁻¹²) under standard fiber attenuation conditions. Transmitter output power and receiver sensitivity comply with 1000BASE-LX and equivalent specifications.
The EOLS-1312-10-D fully complies with the SFP MSA (INF-8074i) and IEEE 802.3z 1000BASE-LX standards. It handles serial data streams with low jitter generation and high extinction ratio. Digital diagnostic monitoring (DDM/DOM) functions compliant with SFF-8472 are supported, allowing real-time reporting of transmitted and received optical power, laser bias current, temperature, and supply voltage via the I²C interface for performance monitoring and fault isolation.
Optical connectivity is realized through a duplex LC connector. Key operational features include Loss of Signal (LOS) detection and assertion, automatic laser shutdown (ALS) for Class 1 eye safety compliance, and hot-swap capability. The module uses the standard 20-pin SFP electrical interface with a single 3.3 V power supply and low power consumption (typically below 1 W), making it suitable for high-density port configurations in routers, switches, and optical transport equipment.
Environmental specifications meet carrier-class and industrial requirements with a commercial operating temperature range of 0°C to +70°C (or extended/industrial variants depending on the exact suffix), high humidity tolerance, and built-in ESD protection. This SFP transceiver is primarily used for point-to-point Gigabit Ethernet links, metro access networks, or as an uplink/tributary interface in RAD equipment and compatible platforms.
The module integrates seamlessly with network management systems for remote monitoring. Installation requires standard fiber optic cleaning procedures, correct Tx/Rx fiber polarity, and adherence to minimum bend radius guidelines. The RAD EOLS-1312-10-D (often supplied as a rebranded Eoptolink module) offers a reliable, compact, and cost-effective solution for 1.25 Gbit/s optical transport over single-mode fiber up to 10 km.