Founded in 1973 and headquartered in Salem, New Hampshire, GPD Optoelectronics Corp. is a leading U.S. manufacturer of InGaAs and Germanium photodiodes, position sensing devices, and custom optical detectors. GPD’s products serve aerospace, defense, telecommunications, industrial, and research applications worldwide. With a proven track record in both custom and commercial off-the-shelf (COTS) solutions, GPD is dedicated to delivering precision, reliability, and innovation under its brand promise: Sensing Further.