Name：Thorlabs ERM200

Features Polarization Extinction Ratio (PER) Measurements of Polarization-Maintaining (PM) Fibers Measures PER Up to 40 dB at Peak Wavelength Three Wavelength Ranges Cover from 400 nm - 2500 nm: 400 nm - 700 nm (Item # ERM210) 600 nm - 1600 nm (Item # ERM200) 1200 nm - 2500 nm (Item # ERM220) Control Via Front Panel Display or USB Interface Exchangeable Fiber Connector Adapters