A Fiberoptic Temperature Sensor Using Wavelength-Dependent Detection

D. A. Christensen; V. A. Vaguine

doi:10.1117/12.942515

23 March 1988 A Fiberoptic Temperature Sensor Using Wavelength-Dependent Detection

D. A. Christensen, V. A. Vaguine

Proceedings Volume 0838, Fiber Optic and Laser Sensors V; (1988) https://doi.org/10.1117/12.942515
Event: Cambridge Symposium on Fiber Optics and Integrated Optoelectronics, 1987, Cambridge, MA, United States

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.

Citation Download Citation

D. A. Christensen and V. A. Vaguine "A Fiberoptic Temperature Sensor Using Wavelength-Dependent Detection", Proc. SPIE 0838, Fiber Optic and Laser Sensors V, (23 March 1988); https://doi.org/10.1117/12.942515

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