Physical bases of fiber-optic temperature sensors development with chalcogenide vitreous semiconductors sensors

Abstract

A method of manufacturing sensitive elements for fiber-optic temperature sensors from chalcogenide semiconductor has been developed. Temperature dependences of the Urbach edge of such elements were measured in the temperature range from 246 to 443 K. Based on the analysis of experimental results, a clear functional dependence of the absorption coefficient of the Urbach region as function of two arguments (photon energy and temperature) for sensitive elements made from As45Se55glass were proposed.