From the manufacturer:
SmartPocket OLP-34/-35/-38 Optical Power Meters
A family of pocket-sized and low-cost optical power meters for the installation and maintenance of single mode and multimode fiber optic networks.
VIAVI SmartPocket Optical Power Meters (OLP-34, OLP-35, and OLP-38) offer an excellent price/performance ratio in a rugged and pocket-sized housing for straightforward use in the field. Mainly used to measure optical power level (dBm) in premises, telco, or CATV fiber optic networks, they also can be combined with LED (OLS-34/OLS-36) or laser light sources (OLS-35/OLS-36) for insertion loss measurement.
Highlights
Rugged and pocket-sized design
Large display combined with an easy-to-use interface
Auto-wavelength recognition function for saving test time and error-free testing
Internal data storage (100 results)
Report generation with OFS-355 software
Applications
The OLP-34 (Ge) is dedicated to LAN/WAN Access and Enterprise multimode or single mode applications.
The OLP-35 (InGaAs) covers all standard singlemode Telecommunication networks including Passive Optical Networks (PON)
The OLP-38 (Filtered InGaAs) is the higher power (+26dBm) version for any CATV (with Analog RF transmission), or amplified DWDM system applications
Key Features
Extra long battery lifetime (>200 hours).
3-years calibration period
Universal optical interface for all 2.5 mm / 1.25 mm connector
Individually settable wavelengths per 1 nm step
Micro USB interface for power supply or data transfer
Can be part of the SmartPocket Optical Test Kits