WS-G5484 Cisco GBIC Transceiver Module 1GBPS Short Wave

Cisco WS-G5484 Short Wave Fiber Transceiver Module

The Cisco WS-G5484 is a high-speed short-wave GBIC transceiver designed for Gigabit Ethernet fiber connectivity. Engineered for enterprise-grade networking, this plug-in optical module delivers stable, efficient, and reliable data transmission across multimode fiber links, making it ideal for scalable network infrastructures and backbone deployments.

Product Information

• Manufacturer: Cisco
• Model Number: WS-G5484
• Product Type: Optical Plug-in Interface Module

Technical Specifications

• Data Rate: 1 Gbps (Gigabit per second)
• Maximum Reach: Up to 550 meters
• Standard Compliance: IEEE 802.3z
• Transmission Type: Short-wave optical fiber communication

Optical and Physical Properties

• Form Factor: GBIC plug-in module
• Interface Type: Gigabit Interface Converter (GBIC)
• Wavelength: 850 nm laser (Class 1)
• Fiber Compatibility: Multimode fiber (50 µm and 62.5 µm)
• Cabling Standard: Ethernet 1000Base-SX optical fiber

Mechanical Dimensions

• Width: 3 cm
• Depth: 6.5 cm
• Height: 1 cm

Primary Functional Advantages

• Enables Gigabit Ethernet over multimode fiber infrastructure.
• Delivers consistent 1 Gbps data transmission speed.
• Supports short-wave optical networking (1000Base-SX).
• Optimized for high-density Cisco switching platforms.
• Enhances network reliability and throughput efficiency.

Signal Transmission Metrics

• Maximum data throughput: 1 Gbit/s
• Minimum transmitter output power: 0 dBm
• Maximum transmitter output power: -9.5 dBm
• Receiver sensitivity: -17 dBm
• Receiver maximum input power: 0 dBm

Fiber Performance Efficiency

• Insertion loss (50 µm MMF): 3.4 dB
• Insertion loss (62.5 µm MMF): 3.2 dB
• Optimized for low-loss short-range transmission

Fiber and Networking Standards

• Multi-mode optical fiber support
• Gigabit Ethernet 1000Base-SX architecture
• IEEE 802.3z compliant transmission protocol
• Designed for high-speed LAN and backbone connections

Laser and Safety Classification

• Class 1 laser-certified optical component
• 850 nm short-wave laser emission
• Safe and regulated optical transmission design

Compatibility and Supported Cisco Platforms

• Cisco Catalyst 4000 Series
• Cisco Catalyst 5000 Series
• Cisco Catalyst 6000 Series

Deployment Flexibility

• Seamless integration with legacy and enterprise Cisco switches
• Ideal for upgrading existing fiber network infrastructures
• Supports modular expansion of network connectivity ports

Enterprise Networking Environments

• Corporate LAN backbone connections
• Campus-wide fiber networking systems
• Data center switch interconnections
• High-speed aggregation layers

Operational Benefits

• Improves network bandwidth efficiency
• Reduces latency in data transmission
• Enhances stability of optical communication links
• Supports scalable network expansion strategies

Key Product Highlights

• 1 Gbps Gigabit Ethernet fiber transceiver module
• Short-wave 850 nm optical transmission
• Multimode fiber compatibility (50 µm and 62.5 µm)
• Up to 550 meters transmission distance
• IEEE 802.3z compliant networking standard
• Designed for Cisco Catalyst 4000/5000/6000 Series

Strategic Network Advantages

• Reliable short-range optical connectivity
• Cost-effective fiber networking solution
• High compatibility with enterprise Cisco hardware
• Efficient plug-and-play GBIC architecture
• Enhanced scalability for evolving IT infrastructures

Cisco WS-G5484 Short Wave GBIC Transceiver Module 

The Cisco WS-G5484 Short Wave GBIC 1Gbps Transceiver Module is a high-performance optical interface component designed to deliver reliable Gigabit Ethernet connectivity over multimode fiber infrastructure. As part of the Gigabit Interface Converter (GBIC) family developed by this transceiver module plays a foundational role in enabling short-reach optical communication between network switches, routers, and enterprise backbone devices. It is widely deployed in campus networks, data centers, and enterprise aggregation layers where high-speed, low-latency fiber connectivity is required within relatively short distances.

Role of WS-G5484 in Gigabit Ethernet Networks

The WS-G5484 operates as an optical transceiver that converts electrical Gigabit Ethernet signals into optical signals and vice versa. This conversion enables high-speed data transmission across multimode fiber cables, typically using short-wave (SX) laser technology optimized for distances up to several hundred meters depending on fiber grade. The module is designed to meet IEEE 802.3z Gigabit Ethernet standards, ensuring interoperability across a wide range of compatible networking equipment and structured cabling systems.

Short Wave Optical Transmission Technology

Short wave optical transmission in the WS-G5484 utilizes 850nm wavelength vertical-cavity surface-emitting laser (VCSEL) technology. This allows the module to transmit data efficiently over multimode fiber while maintaining signal integrity and minimizing attenuation. The design is optimized for cost-effective high-speed networking in environments where long-haul single-mode fiber is not required.

Multimode Fiber Compatibility

The WS-G5484 is specifically engineered for use with multimode fiber (MMF), commonly OM2, OM3, and OM4 classifications. These fiber types are widely deployed within enterprise buildings, data centers, and campus environments. The module’s compatibility with standard LC duplex connectors ensures ease of installation and integration into existing structured cabling systems.

Signal Integrity and Dispersion Management

A key engineering aspect of the WS-G5484 is its ability to maintain signal integrity across multimode fiber distances. Modal dispersion is managed through precise optical alignment and laser calibration, ensuring that data signals remain synchronized and free from distortion over supported link distances. This makes it suitable for high-density switching environments where multiple fiber links operate in parallel.

Technical Architecture of WS-G5484 GBIC Module

The WS-G5484 GBIC module is built using a compact transceiver architecture that integrates both transmitting and receiving optical components within a standardized form factor. It is hot-swappable, allowing network administrators to install or replace the module without powering down the host device, thereby improving operational efficiency and minimizing downtime in production environments.

GBIC Form Factor Design

The Gigabit Interface Converter (GBIC) form factor represents an early standardized optical module design that predates modern SFP (Small Form-Factor Pluggable) modules. Despite being an older architecture, it remains widely supported in legacy Cisco switching platforms and continues to be used in environments where long-term infrastructure stability is prioritized over hardware modernization.

Electrical and Optical Interface Conversion

The WS-G5484 performs bidirectional signal conversion between electrical Ethernet signals and optical light pulses. On the transmit side, electrical signals are converted into optical pulses using VCSEL technology. On the receive side, photodiodes detect incoming optical signals and convert them back into electrical data streams. This dual conversion process enables seamless integration between copper-based networking equipment and fiber optic infrastructure.

Gigabit Ethernet Standards Compliance

The module fully complies with IEEE 802.3z standards for Gigabit Ethernet over fiber optics. This ensures interoperability with a wide range of networking devices, including switches, routers, and optical patch panels. Compliance with these standards also guarantees predictable performance across mixed-vendor environments where Cisco infrastructure interacts with third-party systems.

Enterprise Campus Backbone Connectivity

In enterprise environments, the module is often used to connect distribution switches located in different buildings or network closets. Its ability to provide stable, high-speed fiber connectivity ensures that core network services remain accessible across the entire organization.

Data Center Rack-to-Rack Connections

Within data centers, the WS-G5484 is frequently used for rack-to-rack connectivity, linking top-of-rack switches to aggregation layers. This enables efficient traffic flow between servers, storage systems, and virtualization platforms while maintaining low latency and high throughput.

Optical Characteristics and Transmission Standards

The WS-G5484 utilizes short wave optical transmission optimized for multimode fiber environments. Its optical characteristics are designed to balance power output, signal clarity, and transmission distance, ensuring reliable communication across supported fiber lengths.

850nm VCSEL Laser Technology

At the core of the module is an 850nm VCSEL laser transmitter, which provides efficient light emission for short-range fiber communication. VCSEL technology is widely used in Gigabit Ethernet transceivers due to its low power consumption, high reliability, and cost efficiency.

Environmental Tolerance and Durability

The module is engineered to operate within standard enterprise temperature and humidity ranges, ensuring stable performance in data centers and wiring closets. Its durable design minimizes failure rates and supports continuous 24/7 operation.

Maintenance and Lifecycle Considerations

Although considered a legacy GBIC module, the WS-G5484 remains relevant in environments where long-term infrastructure stability is prioritized. Its predictable lifecycle and compatibility with existing Cisco hardware make it a dependable choice for maintaining established network architectures.

Integration with Cisco Networking Ecosystem

The WS-G5484 integrates seamlessly into a wide range of Cisco switching and routing platforms that support GBIC interfaces. This interoperability ensures that organizations can maintain consistent network architectures while leveraging Cisco’s optical networking technologies.

Compatibility with Catalyst and Modular Platforms

The module is commonly used with Cisco Catalyst switches that support GBIC slots, enabling high-speed fiber uplinks between network layers. This compatibility ensures smooth integration into hierarchical network designs.

Network Expansion and Scalability

Organizations can scale their networks by adding multiple WS-G5484 modules across different switches, enabling distributed fiber connectivity throughout enterprise campuses and data centers. This modular approach supports incremental network growth without requiring full infrastructure replacement.

Long-Term Infrastructure Strategy

The WS-G5484 continues to serve as a strategic component in legacy network environments where stability, compatibility, and cost efficiency are prioritized. Its role in maintaining fiber connectivity across established Cisco infrastructures ensures its continued relevance in enterprise networking deployments.