Novel fibre optic stress/strain sensor using the near-infrared SPATE effect (FONI-SPATE)

John P. Dakin; Jose Luis Cruz Munoz; P. A.S. Reed; I. Sinclair

doi:10.1117/12.184864

13 September 1994 Novel fibre optic stress/strain sensor using the near-infrared SPATE effect (FONI-SPATE)

John P. Dakin, Jose Luis Cruz Munoz, P. A.S. Reed, I. Sinclair

Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994) https://doi.org/10.1117/12.184864
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom

Abstract

A new fiber optic stress/strain sensor, utilizing near-infrared SPATE, is reported which is suitable for monitoring hot materials. The fiber is merely arranged to collect the grey body emission from a heated metal sample. When the sample is subject to transient stresses, the radiation is modulated because of the adiabatic changes in the temperature of the material surface. The modulation of the light is monitored, via a silica optical fiber, using a near-infrared GaInAs photo-detector. This is also believed to be the first demonstration of SPATE in the near infrared region of the spectrum.

Citation Download Citation

John P. Dakin, Jose Luis Cruz Munoz, P. A.S. Reed, and I. Sinclair "Novel fibre optic stress/strain sensor using the near-infrared SPATE effect (FONI-SPATE)", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); https://doi.org/10.1117/12.184864

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