Sapphire optical fiber interferometer

Details Sapphire optical fiber interferometer Sapphire optical fiber interferometer

1992-08-31

1995-01-10

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

356 43, 356 44, 374117, 374126, 374131, 374161, 25022719, G01R 902

Patent

active

053812298

ABSTRACT:
An optical interferometer comprises a multi-mode sapphire fiber as a high temperature sensor. One end of the sapphire fiber is coupled to a silica fiber and, in turn, to the sapphire fiber. The sapphire fiber sensor produces reference and sensor reflections that produce optical fringes at the output of a detector coupled to the silica optical fiber via an opto-coupler. The optical fringes are related to displacements of the sensor which, in turn, can provide an indirect measurement of pressure, strain or temperature of the surface.

REFERENCES:
patent: 4627731 (1986-12-01), Waters et al.
patent: 4679934 (1987-07-01), Ganguly et al.
patent: 4750139 (1988-06-01), Dils
patent: 4859079 (1989-08-01), Wickersheim et al.
patent: 4883354 (1990-01-01), Sun et al.

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