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What does LH40 optical module represent

Fibre interconnection and data room reference Published 06 Aug 2026

Use this reference to prepare product questions for FD SOLUCIONES. Check interfaces, capacity, protection and installation requirements against the current product documentation.

The LH40 optical module is a 1 Gigabit SFP transceiver designed for long-distance single-mode fiber communication up to 40 kilometers.

Overview

The LH40 optical module is a Small Form-factor Pluggable (SFP) transceiver used in networking equipment to enable high-speed data transmission over long distances. It supports Gigabit Ethernet (1000Base-LH) and is specifically designed for single-mode fiber (SMF) connections, making it suitable for enterprise LANs, data centers, and ISP networks.

Key Specifications

Data Rate: 1 Gbps (Gigabit Ethernet)Maximum Distance: Up to 40 km over single-mode fiberWavelength: 1310 nm, optimized for long-haul transmissionConnector Type: LC (Lucent Connector) duplexHot Swappable: Can be installed or replaced without powering down the network deviceDigital Optical Monitoring (DOM): Provides real-time monitoring of operating parameters such as temperature, voltage, and optical power ApplicationsThe LH40 module is commonly used in: Enterprise LAN & SAN networks for connecting switches, routers, and serversData center interconnects where long-distance fiber links are requiredInternet Service Provider (ISP) networks for reliable Gigabit Ethernet linksTelecommunications networks requiring stable long-haul optical connections Compatibility and ComplianceThe LH40 module is compatible with Alcatel-Lucent, Huawei, and other networking equipment that supports 1000Base-LH SFP transceivers.

It is RoHS compliant, lead-free, and often TAA compliant, ensuring adherence to international safety and trade standards.

Summary

In essence, the LH40 optical module represents a long-reach, single-mode SFP transceiver capable of transmitting Gigabit Ethernet signals over distances up to 40 km. Its combination of long-distance capability, hot-swappable design, and digital monitoring makes it a reliable choice for high-performance networking applications.

What does LH40 optical module represent - FD SOLUCIONES OPTICAL SYSTEMS [PDF]

What does LH40 optical module represent

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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