The OMH-6742B Optical Power and Wavelength Measurement Head is an integrating sphere based measurement head compatible with the OMM-6810B Optical Power and Wavelength Meter. The OMH-6742B is designed to measure optical power up to 1W over a wavelength range of 400-1100nm. The OMH-6742B also has the unique ability to measure the wavelength of the source with an NIST traceable accuracy of ±1.0nm. Accurate measurements can be taken either by free space or with a compatible fiber optic adapter. Fiber optic adapters include FC, ST, or bare fiber.