Cisco Compatible GLC-LH-SM / SMD / RGD / SFP-GE-L | 1G SFP LX 1310nm 10km

Cisco Compatible GLC-LH-SM / GLC-LH-SMD / GLC-LX-SM-RGD / SFP-GE-L SFP Transceiver | 1GBASE-LX/LH, LC Duplex, SMF (10km)

Product Overview

The Cisco Compatible GLC-LH-SM / GLC-LH-SMD / GLC-LX-SM-RGD / SFP-GE-L SFP Transceivers are a versatile family of 1Gbps single-mode optical modules designed for medium-range transmission over single-mode fiber (SMF). Operating at a 1310nm wavelength, these modules support distances of up to 10 kilometers, making them ideal for enterprise networks, campus backbones, and telecom access deployments.

This series includes multiple variants to meet different operational requirements:

GLC-LH-SM – Standard 1G LX/LH module

GLC-LH-SMD – LX/LH module with DOM/DDM monitoring

GLC-LX-SM-RGD – Industrial-grade rugged module

SFP-GE-L – Cisco equivalent 1000BASE-LX module

All models are fully compatible with Cisco platforms and provide reliable, cost-effective alternatives to OEM optics.

Key Features

Supports 1Gbps data rate (1000BASE-LX/LH)

1310nm DFB laser for single-mode fiber

Up to 10km transmission over SMF

LC duplex connector interface

Hot-pluggable SFP form factor

Fully compatible with Cisco SFP ports

Low power consumption

MSA compliant and fully tested

Variant Highlights:

GLC-LH-SMD: Supports DOM/DDM monitoring

GLC-LX-SM-RGD: Industrial-grade, extended temperature range

SFP-GE-L: Equivalent Cisco LX module

Technical Specifications

General Parameters

Form Factor: SFP

Data Rate: 1Gbps

Wavelength: 1310nm

Transmission Distance:

Up to 10km (SMF)

Up to 550m (MMF with mode conditioning patch cord)

Connector: LC Duplex

Fiber Type: Single-Mode Fiber (SMF)

Optical Characteristics

Transmitter Type: DFB Laser

Receiver Type: PIN Photodiode

TX Power: -9.5 ~ -3 dBm

RX Sensitivity: ≤ -20 dBm

Electrical & Environmental

Power Consumption: ≤ 1W

Operating Temperature:

Standard: 0°C to 70°C

Industrial (RGD): -40°C to 85°C

Storage Temperature: -40°C to 85°C

Additional Features

DOM/DDM (GLC-LH-SMD only):

TX/RX optical power monitoring

Temperature & voltage monitoring

Compliance

IEEE 802.3z (1000BASE-LX/LH)

SFP MSA compliant

RoHS compliant

Applications

Enterprise campus backbone networks

Data center interconnects (DCI)

Telecom access and aggregation networks

Switch-to-switch long-distance connections

Industrial and outdoor deployments (RGD)

Model Comparison

Model	Distance	DOM/DDM	Temperature	Use Case
GLC-LH-SM	10km	❌ No	0–70°C	Standard deployment
GLC-LH-SMD	10km	✅ Yes	0–70°C	Monitoring & diagnostics
GLC-LX-SM-RGD	10km	Optional	-40–85°C	Industrial environments
SFP-GE-L	10km	❌ No	0–70°C	Cisco equivalent

Why Choose This Product

This Cisco-compatible 1G LX/LH SFP series is a reliable and widely used solution for medium-distance optical networking. It offers:

Stable 10km transmission over SMF

Flexible options for different deployment scenarios

Cost-effective alternative to OEM optics

Enhanced monitoring with DOM (SMD version)

Rugged performance for harsh environments (RGD version)

It is ideal for both new deployments and upgrading existing 1G networks.

When to Choose These Modules

Choose this LX/LH series if:

✔ Distance requirement is up to 10km ✔ Using single-mode fiber (SMF) ✔ Need stable and cost-effective 1G connectivity

Choose specific models based on needs:

GLC-LH-SMD → Need monitoring & diagnostics

GLC-LX-SM-RGD → Industrial/harsh environments

GLC-LH-SM / SFP-GE-L → Standard applications

Choose SX modules if:

✔ Distance is within 550m ✔ Using multimode fiber (MMF)

Cisco compatible GLC-LH-SM, GLC-LH-SMD, GLC-LX-SM-RGD, SFP-GE-L, 1G SFP LX module, 1000BASE-LX transceiver, Cisco SFP 1310nm 10km, LC SMF SFP