The 819-IG-06-WL Optical Power and Wavelength Measurement Sensor is an integrating sphere based detector compatible with the 1938-R or 2938-R Optical Meters. The 819-IG-06-WL is designed to measure optical power up to 1W over a wavelength range of 950 - 1650 nm. The 819-IG-06-WL also has the unique ability to measure the wavelength of the source with a NIST traceable calibration uncertainty of ±0.5 nm. Accurate measurements can be taken either by free space or with a compatible fiber optic adapter. Fiber optic adapters include FC or bare fiber types.