This ultra-long-reach Gigabit SFP transceiver delivers exceptional connectivity for extreme-distance network deployments, supporting transmission distances up to 160 km (approximately 100 miles) over single-mode fiber. Operating at the 1370nm CWDM wavelength with 1.25 Gbps data rate, this module features high-performance APD receiver technology and a cooled DFB laser designed specifically for metropolitan and regional networks requiring massive optical budgets. The duplex LC connector interface ensures secure fiber connectivity, while Digital Optical Monitoring (DOM) support enables real-time performance tracking and diagnostics. As a TAA Compliant module manufactured in the USA or UK, it meets mandatory sourcing requirements for U.S. Federal Government, Department of Defense, and GSA-schedule procurement projects. This transceiver is ideal for service providers, enterprise campus interconnects, and critical infrastructure applications where reliable gigabit connectivity across substantial distances is essential. The module's specialized design combines high-power laser transmission with high-sensitivity receiver capabilities to overcome the challenges of ultra-long-haul fiber optic communications.