Center for Innovative Technology

Sridhar Gollapudi

Kent A Murphy

Anbo Wang

Richard O Claus

Ashish M Vengsarkar

Shari Feth

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.

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Sridhar Gollapudi