CRYO-PoF: Cryogenic power over fiber for fundamental and applied physics at Milano-Bicocca

The power over fiber (PoF) technology delivers electrical power by sending laser light throughan optical fiber to a photovoltaic power converter, in order to power sensors or electrical devices.This solution offers several advantages: removal of noise induced by power lines, robustness in ahostile environment, spark free operation when electric fields are present and no interference withelectromagnetic fields. This technology is at the basis of the Cryo-PoF project: an R&D funded bythe Italian Insitute for Nuclear Research (INFN) in Milano-Bicocca (Italy). This project is inspiredby the needs of the DUNE Vertical Drift detector, where the VUV light of liquid argon must becollected at the cathode, i.e. on a surface whose voltage exceeds 300 kV. We aim to develop acryogenic system, which is solely based on optoelectronic devices and a single laser input line, topower both the Photon Detection devices and its electronic amplifier. We will presents the firstresults obtained during tests performed in Milano-Bicocca laboratory.