NASA NTRS · 19920067337
Sapphire-fiber-based intrinsic Fabry-Perot interferometer
Abstract
A sapphire optical fiber intrinsic Fabry-Perot interferometric sensor is demonstrated. A length of multimode sapphire fiber that functions as a Fabry-Perot cavity is spliced to a silica single-mode fiber. The interferometric signals of this sensor are produced by the interference between the reflection from the silica-sapphire fiber splice and the reflection from the free end face of the sapphire fiber. This sensor has been demonstrated for temperature measurement. A resolution of 0.2 C has been obtained over a measurement range of 310 C to 976 C.
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Wang, Anbo, Gollapudi, Sridhar, Murphy, Kent A., May, Russell G., Claus, Richard O.. 1992-07-15. Sapphire-fiber-based intrinsic Fabry-Perot interferometer. https://ntrs.nasa.gov/citations/19920067337
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