SFP-1G-LH Cisco Sfp (mini-gbic) Transceiver Module Gige Over Fiber Optic 1000base-lhx

The Cisco SFP-1G-LH SFP (Small Form-Factor Pluggable) transceiver module is designed to provide high-performance and reliable gigabit Ethernet connectivity over single-mode fiber optic cables. This module supports the 1000BASE-LHX standard, making it suitable for long-distance communication with speeds up to 1 Gbps.

General Information

• Manufacturer: Cisco
• Part Number: SFP-1G-LH
• Product Type: Transceiver Module

Technical Highlights

• Connectivity: Wired technology
• Cabling Standard: 1000Base-LHX
• Protocol Supported: 1GbE (Gigabit Ethernet)
• Transfer Speed: 1 GBPS
• Optical Wavelength Range: 1270–1355 nm
• Transmission Reach: Up to 31.1 miles

Expansion and Connectivity

• Interface Type: Ethernet
• Connector Standard: 1000Base-LHX
• Connector Format: LC single-mode female
• Available Ports: 2

Power Consumption

• Energy Usage: 1 Watt

Compliance with Industry Standards

• IEEE 802.3z
• IEEE 802.3ah

Cisco SFP-1G-LH SFP Mini-GBIC Transceiver Module

The Cisco SFP-1G-LH SFP (Mini-GBIC) Transceiver Module is a Gigabit Ethernet optical networking solution engineered for reliable long-distance fiber connectivity across enterprise, campus, metropolitan, and service provider environments. Designed to support 1000BASE-LHX optical standards, this Small Form-Factor Pluggable transceiver enables network administrators to extend Gigabit Ethernet connections over single-mode fiber infrastructure while maintaining exceptional signal integrity and operational stability. Operating within a wavelength range of 1270 nm to 1355 nm and utilizing LC optical connectors, the module provides a versatile and efficient solution for high-performance optical communication.

The compact hot-swappable form factor allows network professionals to install or replace modules without disrupting network operations. This capability is particularly valuable in mission-critical environments where downtime must be minimized. The Cisco SFP-1G-LH transceiver supports distances of up to 31.1 miles (50 kilometers) over compatible single-mode fiber cabling, making it an ideal choice for organizations requiring long-haul Gigabit Ethernet connectivity between buildings, campuses, data centers, and remote facilities.

As part of Cisco's extensive portfolio of optical networking products, the SFP-1G-LH module delivers compatibility with a wide range of Cisco switches, routers, and networking platforms. Its design emphasizes interoperability, reliability, and adherence to industry standards, ensuring seamless integration into existing optical network infrastructures.

1000BASE-LHX Gigabit Ethernet Optical Technology

The Cisco SFP-1G-LH transceiver is based on 1000BASE-LHX optical technology, which extends Gigabit Ethernet communications across long distances using single-mode fiber. This technology is optimized for environments where copper-based Ethernet connections are insufficient due to distance limitations or electromagnetic interference concerns.

By transmitting optical signals instead of electrical signals, the module enables significantly longer communication distances while preserving bandwidth and network performance. Optical networking technology also enhances security, reduces susceptibility to signal degradation, and provides greater reliability in industrial and enterprise deployments.

Gigabit Ethernet Performance

Supporting a data transfer rate of 1 Gbps, the Cisco SFP-1G-LH module enables efficient transport of network traffic, including voice, video, cloud applications, storage communications, and business-critical data. Gigabit Ethernet remains a foundational networking standard for organizations seeking dependable bandwidth for everyday operations.

The transceiver ensures stable packet delivery and consistent throughput, making it suitable for applications that require predictable network performance across extended distances.

Long-Reach Optical Communication

Long-reach optical technology allows organizations to interconnect geographically separated facilities while maintaining Gigabit Ethernet speeds. The Cisco SFP-1G-LH module supports communication distances reaching approximately 50 kilometers, enabling cost-effective network expansion without sacrificing performance.

This capability is particularly useful in educational campuses, healthcare institutions, government facilities, manufacturing sites, and telecommunications networks where buildings or operational locations may be distributed across large geographic areas.

Single-Mode Fiber Connectivity Advantages

The Cisco SFP-1G-LH transceiver is designed specifically for operation over single-mode fiber cabling. Single-mode fiber is widely recognized for its ability to support long-distance optical communication with minimal signal loss and superior transmission quality.

Extended Transmission Distance

Single-mode fiber enables the Cisco SFP-1G-LH module to achieve transmission distances far beyond those supported by multimode fiber solutions. With support for links up to 31.1 miles, organizations can establish reliable optical pathways between remote facilities without requiring extensive signal regeneration equipment.

The narrow optical core of single-mode fiber minimizes modal dispersion, allowing optical signals to travel greater distances while preserving signal quality and network integrity.

Reduced Signal Attenuation

Signal attenuation is a critical consideration in long-distance networking. The Cisco SFP-1G-LH transceiver utilizes advanced optical components designed to minimize attenuation and maintain robust communication performance throughout the entire transmission path.

This low-loss transmission characteristic contributes to improved reliability and reduced maintenance requirements for network operators.

Optical Wavelength Characteristics

The Cisco SFP-1G-LH module operates within a wavelength range of 1270 nm to 1355 nm. This wavelength specification is carefully selected to optimize long-distance optical transmission over single-mode fiber networks.

Optimized Fiber Transmission Window

The selected optical wavelength range enables efficient signal propagation through single-mode fiber infrastructure. By operating within a low-attenuation transmission window, the transceiver achieves stable communication over extended distances.

These wavelength characteristics contribute to enhanced signal quality and reduced optical power loss throughout the network link.

Reliable Optical Signal Integrity

Maintaining signal integrity is essential for long-haul optical communication. The Cisco SFP-1G-LH module incorporates precision optical components that help preserve signal quality while minimizing distortion and transmission errors.

The result is dependable data transport that supports enterprise-grade networking requirements.

LC Connector Interface

The Cisco SFP-1G-LH transceiver utilizes LC optical connectors, which have become one of the most widely adopted connector formats in modern networking environments. LC connectors offer a compact footprint, reliable performance, and simplified cable management.

Compact Connector Architecture

LC connectors occupy less physical space than many traditional fiber connector types. This compact design enables higher port density within switches, routers, patch panels, and optical distribution frames.

High-density connectivity is particularly valuable in data centers and telecommunications facilities where rack space is a premium resource.

Secure Optical Connections

The connector mechanism provides secure mating between fiber cables and transceiver interfaces. Reliable physical connections help maintain optimal optical performance while reducing the risk of accidental disconnections.

Consistent connector alignment also contributes to improved signal transmission and reduced insertion loss.

Hot-Swappable SFP Form Factor Benefits

The Cisco SFP-1G-LH module features the industry-standard Small Form-Factor Pluggable architecture. This design simplifies deployment, maintenance, and network scalability.

Flexible Network Expansion

Modular SFP technology enables organizations to expand network capabilities incrementally. Rather than replacing entire networking devices, administrators can simply install appropriate transceivers to support new connectivity requirements.

This modular approach improves infrastructure flexibility while helping manage network investment costs.

Efficient Inventory Management

Standardized SFP modules simplify spare parts management and deployment planning. Organizations can maintain inventories of compatible transceivers that support a variety of networking applications across multiple Cisco platforms.

This standardization contributes to operational efficiency and faster maintenance response times.

Compatibility with Cisco Networking Platforms

The Cisco SFP-1G-LH transceiver is engineered to operate with numerous Cisco switches, routers, security appliances, and enterprise networking platforms. Its compatibility ensures seamless integration into Cisco-based infrastructures.

Cisco Switch Integration

The module supports deployment within Cisco Ethernet switches that feature compatible SFP slots. These switches can leverage the transceiver to establish long-distance fiber uplinks, inter-switch connections, and building-to-building communication links.

Gigabit optical uplinks help optimize network segmentation and traffic management across enterprise environments.

Router Connectivity

Cisco routers equipped with SFP interfaces can utilize the SFP-1G-LH module to establish high-performance optical WAN and LAN connections. This capability enables efficient data transport between regional offices, branch locations, and service provider networks.

Reliable optical connectivity supports mission-critical routing functions and enterprise communication requirements.

Enterprise Network Applications

Campus Network Connectivity

Educational institutions, corporate campuses, and government facilities frequently require high-speed links between multiple buildings. The Cisco SFP-1G-LH module provides an effective solution for extending Gigabit Ethernet connectivity across large campus environments.

Its long-distance transmission capability allows organizations to centralize resources while maintaining reliable communication pathways throughout the campus.

Metropolitan Area Networking

Organizations operating across metropolitan regions often require secure and dependable optical connectivity between distributed facilities. The Cisco SFP-1G-LH transceiver supports these requirements by enabling Gigabit Ethernet communication across significant distances using single-mode fiber infrastructure.

Metropolitan deployments benefit from reduced latency and consistent network performance.

Data Center Interconnection

Data centers increasingly rely on optical networking technologies to support growing workloads and distributed architectures. The Cisco SFP-1G-LH module can be used to establish reliable interconnections between data center facilities, backup locations, and disaster recovery sites.

These connections support data replication, storage synchronization, and business continuity initiatives.

Service Provider and Telecommunications Deployments

Carrier Network Infrastructure

Telecommunications providers require dependable optical components capable of supporting continuous operation and long-distance communication. The Cisco SFP-1G-LH module addresses these requirements through robust optical design and enterprise-grade reliability.

Carrier networks benefit from stable optical performance, efficient bandwidth utilization, and simplified deployment processes.

Broadband Distribution Networks

Broadband service providers frequently use Gigabit optical links to connect network aggregation points and distribution facilities. The Cisco SFP-1G-LH transceiver enables efficient transport of subscriber traffic across regional network infrastructures.

Reliable optical transmission contributes to consistent service quality and customer satisfaction.

Performance and Reliability Characteristics

Stable Data Transmission

The Cisco SFP-1G-LH module is engineered to deliver consistent Gigabit Ethernet performance across long-distance optical links. Advanced optical circuitry helps maintain transmission stability even in demanding network environments.

Reliable performance reduces packet loss and supports uninterrupted application availability.

Error Reduction Technologies

Optical communication systems depend on accurate signal transmission to maintain network efficiency. The Cisco SFP-1G-LH transceiver incorporates technologies designed to minimize transmission errors and preserve communication quality.

Enhanced error performance contributes to improved user experiences and application responsiveness.

Network Scalability

Supporting Growing Bandwidth Demands

As organizations continue expanding digital operations, reliable Gigabit optical connectivity remains essential for supporting increasing traffic volumes. The Cisco SFP-1G-LH module provides a scalable foundation for network growth while leveraging existing single-mode fiber infrastructure.

Its deployment helps organizations maximize infrastructure investments while maintaining dependable connectivity.

Efficient Fiber Resource Utilization

Single-mode fiber networks represent valuable infrastructure assets. The Cisco SFP-1G-LH transceiver enables organizations to utilize these resources efficiently by delivering high-performance Gigabit Ethernet communication across extended distances.

Efficient resource utilization contributes to lower infrastructure costs and improved network planning flexibility.