The WG OLS-25, OLA-35, and OLP-1 Optical Meters Full Set is a three-instrument kit for fiber optic network characterization and testing. It combines an optical light source, variable attenuator, and power meter in a single portable package with carrying case. Field technicians and network engineers use this set to measure signal loss, continuity, and power levels across single-mode fiber installations.
Technical Specifications
Optical Light Attenuator (OLA-35)
• Wavelength range: 1250 to 1600 nm
• Attenuation at 1300 nm: 2 to 65 dB variable
• Attenuation at 1550 nm: 2 to 60 dB variable
• Insertion loss: ≤ 2 dB
• Fiber type: 9/125 µm single-mode
• Return loss: 35 dB minimum (residual attenuation)
• Auto-off function: 15 minutes inactivity default
Optical Power Meter (OLP-1)
• Detector type: InGaAs, Filtered InGaAs
• Wavelength range: 780 to 1650 nm
• Power range: -65 to +10 dBm
• Display range: -65 to +13 dBm
• Maximum input power: +16 dBm
• Optical interface: Universal 2.5 mm / 1.25 mm
• Operation: Single-button control
– Key Features
• Low back-reflection design suitable for WDM and laser-based systems
• Dual-wavelength operation at 1300 nm and 1550 nm
• Extended measurement range spanning 780 to 1650 nm
• Durable carrying case for field deployment
• Battery or mains operation with optional adapter
– Typical Applications
• Single-mode fiber optic system commissioning
• Signal loss and attenuation characterization
• Power level verification in deployed networks
• WDM system testing and analysis
• Field-level fiber continuity and loss assessment
– Compatibility & Integration
The OLA-35 accommodates standard test adapters for DIN, FC, ST, and SC connector systems. The OLP-1 accepts universal 2.5 mm and 1.25 mm optical connectors. Both instruments function independently or as an integrated measurement chain for end-to-end system validation.

















