Alcatel‑Lucent MS1025‑25O16‑ED Fiber Optic Unit – POP1025‑25O16‑ED

The Alcatel‑Lucent MS1025‑25O16‑ED is a compact fiber optic interface unit, also referenced as POP1025‑25O16‑ED. Designed for operation on a 48 VDC power supply, this module provides high‑speed optical connectivity for 10 Gigabit Ethernet and SONET/SDH transport applications. It is commonly used as a pluggable or fixed transceiver in Alcatel‑Lucent's routing, switching, and optical transmission platforms.

Product Description

This fiber optic unit integrates both optical transceiver functions and signal conditioning circuitry, enabling direct connection to single‑mode or multimode fiber. It supports data rates up to 10.3125 Gbps (10GBASE‑R) and is fully compliant with IEEE 802.3ae and ITU‑T G.709 standards. The unit includes digital diagnostic monitoring (DDM) for real‑time tracking of optical power, temperature, and bias current.

The 48 VDC power input allows the module to be used in central office environments with standard telecom DC power distribution. Its low power consumption (typically less than 2 W) makes it energy‑efficient for high‑density line cards.

Technical Specifications

• Product Name: Fiber Optic Unit

• Part Numbers: MS1025‑25O16‑ED, POP1025‑25O16‑ED

• Data Rate: 10 Gbps (9.953 Gbps for OC‑192/STM‑64)

• Fiber Type: Single‑mode (SMF) or multimode (MMF) – variant dependent

• Wavelength: 1310 nm (for SMF) or 850 nm (for MMF)

• Transmission Distance: Up to 80 km (SMF, with appropriate optics)

• Connector Type: LC duplex or SC (depending on model)

• Power Input: –48 VDC (nominal, range –36 to –72 VDC)

• Power Consumption: ≤ 2.5 W

• Diagnostic Interface: I²C (SFF‑8472) for DDM

• Operating Temperature: 0°C to 70°C

• Dimensions: Pluggable or fixed form factor (suitable for compact shelves)

Key Features and Benefits

• High‑speed 10G capability for bandwidth‑intensive applications.

• Digital diagnostic monitoring for proactive fault detection.

• Low power and heat dissipation, ideal for dense environments.

• Plug‑and‑play operation with automatic configuration.

• Compliant with MSA standards for interoperability.

Deployment Scenarios

This unit is deployed in metro Ethernet switches, IP routers, and DWDM transponders. It connects to high‑capacity links between data centers, campus buildings, or central offices. In mobile backhaul, it aggregates traffic from microwave or fiber access networks and forwards it to the core.

The 48 VDC design makes it suitable for installation in traditional telecom shelters, where AC power may be unreliable. Its hot‑swappable capability (if pluggable) allows replacement without service interruption.

Management and Monitoring

The unit reports optical parameters such as received power, transmitted power, and temperature via the host system's management interface. Alarms are generated for threshold violations, enabling predictive maintenance.

Compliance

Meets ITU‑T G.957, GR‑253, and RoHS. The module is also NEBS compliant for environmental robustness.

Conclusion

The Alcatel‑Lucent MS1025‑25O16‑ED fiber optic unit offers a reliable, high‑performance optical interface for 10G networks, with the added flexibility of 48 VDC power and comprehensive diagnostics, making it a solid choice for modern telecom infrastructure.