A Fiberoptic Temperature Sensor Using Wavelength-Dependent Detection

Publisher Website
Google Scholar
Abstract
A fiberoptic temperature probe based upon spectrophotometric detection of the change in wavelength of the optical absorption edge of a semiconductor sensor has been fabricated and tested. Broadband light is transmitted through the sensor--a small prism of GaAs--attached to the end of a two-fiber probe. The returned light is analyzed by a fast-scanning spectrometer consisting of a diffraction grating and a silicon photodiode array. For handling multiple probes, a rectangular detector array may be employed. The system has been operated over a temperature range from 20°C to 175°C.

This publication has 0 references indexed in Scilit: