The OPM500 from Artifex Engineering GmbH & Co. KG is a Optical Power Meter with Wavelength Range 950 to 2100nm (extended InGaAs), 950 to 1650 nm(InGaAs), 400 to 950nm (Si), 200 to 950nm (UV-Si), 950 to 1500 nm(Ge). More details for OPM500 can be seen below.