Fraunhofer HHI provides photodetector modules for single photon detection operating from the O- to the L-band. The SPAD chips inside the modules are based on mature InP technology and are fabricated in the wafer process line of Fraunhofer HHI, with Telcordia and space-qualified processes. The SPAD supply chain is completely within EU, including packaging at the Fraunhofer HHI facility.