Name: FWLF1634RL61 Finisar 4.25Gbps 1000Base-ZX 80km Single-mode Fiber SFP
Brand: Finisar
SKU: FWLF1634RL61
Price: 1176.66 USD
Availability: InStock
Rating: 4.8 (130 reviews)

Product Overview
The Finisar FWLF1634RL61 is a 4.25 Gbps SFP transceiver designed for long-distance single-mode fiber communication. It fits seamlessly into network equipment to deliver dependable 1000Base-ZX performance over distances reaching 80 km, commonly used in settings where extended fiber links are needed without sacrificing signal quality.

General Information
Brand	Finisar
Part Number	FWLF1634RL61

Technical Information
Form Factor	SFP
Media	SMF
Type	DFB
Protocols	1000Base-ZX
Connector	LC Duplex

Physical Characteristics
Weight	3.00
Condition	Refurbished

Product Description
This Finisar FWLF1634RL61 transceiver module enables reliable 4.25 Gbps data transmission over long distances using single-mode fiber. It operates at a wavelength of 1528.77 nm and supports the 1000Base-ZX Ethernet standard, making it suitable for extended reach fiber optic networks. Frequently found in enterprise and telecom environments, this module fits into SFP slots on switches or routers to establish high-speed, long-haul connections. Network engineers and infrastructure administrators benefit from its proven compatibility and performance in spanning network segments across campuses or metro areas. Key Features Operates at a wavelength of 1528.77 nm to align with DWDM systems Supports distances up to 80 kilometers on single-mode fiber Compliant with 1000Base-ZX standard for extended Ethernet links Utilizes duplex LC connectors for secure fiber connections Compact SFP form factor for flexible network deployment Such transceivers are typically deployed in data center interconnects, carrier networks, or large campus backbones where long reach and stable performance are critical. Its role is to bridge physical gaps efficiently while maintaining data integrity over fiber optic infrastructure.

Use Cases
The Finisar FWLF1634RL61 SFP transceiver is frequently deployed in environments requiring extended fiber optic links without compromising data integrity, such as metropolitan area networks and inter-building connections. It benefits network engineers and IT professionals managing infrastructure where long-distance, high-bandwidth communication is essential. How It's Used: Connecting enterprise campuses via long-haul single-mode fiber to maintain seamless data flow across dispersed buildings. Enabling data center interconnects that demand robust 80 km fiber links for virtualization or storage replication workloads. Supporting service provider networks that require reliable 1000Base-ZX connectivity to extend network reach to remote customer sites. Facilitating connectivity in smart city infrastructures where extended distances between nodes necessitate long-range transceivers. Integrating in telecommunications backhaul systems to ensure consistent network performance over metropolitan and regional distances. By supporting long-range single-mode fiber transmissions, this transceiver enhances network scalability and sustains high operational efficiency in critical infrastructure deployments. It allows enterprises and service providers to extend their fiber networks without frequent signal repeaters, thus maintaining performance and reducing complexity.

FWLF1634RL61 Finisar 4.25Gbps 1000Base-ZX 80km Single-mode Fiber SFP

Product Overview

General Information

Technical Information

Physical Characteristics

Product Description

Use Cases