The Exfo FLS-136A is a compact laser source engineered for precise optical loss measurements and network system evaluation across critical telecommunications wavelengths. It delivers continuous wave (CW) signals for power and loss measurements, plus 2 kHz modulation for fiber identification. The unit integrates directly with power meters and OTDRs in laboratory and field settings, supporting dual-wavelength operation and multiple connector types via EXFO’s Universal Interface.
Technical Specifications
• Wavelengths: 1310 nm and 1550 nm (dual-wavelength configuration)
• Output Signal: Continuous wave (CW) for loss and power measurements; 2 kHz signal generation for fiber identification
• Optical Output Power: Launch power varies by fiber type (9/125 µm: −25 dBm at 1550 nm; 50/125 µm: −20/−25 dBm at 1310/1550 nm; 62.5/125 µm specifications available)
• Connector Options: SC, ST, and FC adapters supplied; EXFO Universal Interface
– Key Features
• Dual power options: 9 V battery or AC adapter
• Battery runtime: minimum 7 hours continuous operation
• Auto-off timer: 10 minutes for extended field deployments
• Compact form factor with shockproof PVC holster and carrying strap
• Durable field-rated casing
– Typical Applications
• Component-level optical testing
• Network verification and loss measurements
• Fiber identification in installed systems
• Laboratory and field troubleshooting
– Compatibility & Integration
The FLS-136A connects directly to EXFO power meters and OTDR instruments through its Universal Interface, enabling integrated test workflows without adapter complications.


















