Alcatel-Lucent 3AL91792AA 01 iL-1.2 Optical Interface with LC Connector

The Alcatel‑Lucent 3AL91792AA 01 iL‑1.2 is a high‑performance optical interface module designed for use in carrier‑grade telecommunications and routing equipment. This module features an LC (Lucent Connector) duplex interface, providing reliable, high‑speed fiber optic connectivity for transport, metro, and core network applications. The iL‑1.2 designation indicates a specific optical reach and wavelength characteristic optimized for intermediate‑distance links.

Overview

The 3AL91792AA 01 is part of Alcatel‑Lucent’s optical interface portfolio, designed to plug into compatible line cards or chassis slots. It provides a physical layer interface between the electrical domain of the host system and the optical fiber infrastructure. The LC connector offers a compact, high‑density termination with low insertion loss, making it ideal for high‑port‑count applications. The module supports digital diagnostic monitoring (DDM) for real‑time performance tracking.

Key Features

• LC duplex optical connector interface

• Supports high‑speed data rates (1 Gbps to 10 Gbps depending on variant)

• Single‑mode or multi‑mode fiber support (variant dependent)

• Digital diagnostic monitoring (DDM) for real‑time optical power and temperature

• Hot‑swappable for in‑service maintenance

• Compliant with SFP/SFP+ MSA standards

• RoHS compliant for environmental standards

Technical Specifications

• Connector Type: LC duplex

• Data Rate: 1.25 Gbps or 10.3125 Gbps (depending on configuration)

• Fiber Type: Single‑mode (9/125 µm) or multi‑mode (50/125 µm)

• Wavelength: 1310 nm (typical for intermediate reach)

• Reach: Up to 10 km (SMF) or 550 m (MMF)

• Transmit Power: -6 to 0 dBm (typical)

• Receiver Sensitivity: -14.4 dBm (for 10G, BER 1E‑12)

• DDM Parameters: Temperature, Vcc, Tx power, Rx power, bias current

• Operating Temperature: 0°C to 70°C (commercial) or -40°C to +85°C (industrial)

Applications

This optical interface module is widely used in Alcatel‑Lucent 7750 SR routers, optical transport systems, and metro Ethernet switches. It provides connectivity for inter‑office links, data center interconnects, and high‑speed enterprise backbone connections.

Compatibility and Integration

The 3AL91792AA 01 is compatible with a wide range of Alcatel‑Lucent line cards that accept SFP or SFP+ form factors. It interoperates with standard optical networking equipment from other vendors when using compliant optics. The module automatically negotiates speed and protocol with the host system.

Installation and Maintenance

Install the module by inserting it into the appropriate SFP/SFP+ port until it clicks into place. Connect the LC fiber patch cable, ensuring proper polarity. The system will automatically detect the module and activate the link. Maintenance includes periodic cleaning of the LC connector end‑faces using appropriate fiber cleaning tools and monitoring DDM values for early warning signs of degradation.

Conclusion

The Alcatel‑Lucent 3AL91792AA 01 iL‑1.2 optical interface with LC connector delivers reliable, high‑speed fiber optic connectivity essential for modern carrier networks. Its robust design, digital diagnostics, and hot‑swappable capability make it a dependable choice for network operators.