Split-cavity cross-coupled extrinsic fiber interferometer

Venkatapura S. Sudarshanam; Rajat R. Dhawan; Richard O. Claus

doi:10.1117/12.141326

26 March 1993 Split-cavity cross-coupled extrinsic fiber interferometer

Venkatapura S. Sudarshanam, Rajat R. Dhawan, Richard O. Claus

Proceedings Volume 1798, Fiber Optic Smart Structures and Skins V; (1993) https://doi.org/10.1117/12.141326
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

A new configuration of the extrinsic Fabry-Perot interferometer that eliminates the need for biasing the phase difference at the quadrature point is presented. This new version based on four-beam interference utilizes two sensor heads on a single directional coupler in a split- cavity cross-coupled extrinsic fiber interferometer (SCEFI) arrangement. The spectrum analysis scheme devised for signal demodulation allows a linear readout of the phase shift. Both dynamic as well as static phase shifts are considered. Significant applications of the SCEFI are also discussed.

Citation Download Citation

Venkatapura S. Sudarshanam, Rajat R. Dhawan, and Richard O. Claus "Split-cavity cross-coupled extrinsic fiber interferometer", Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); https://doi.org/10.1117/12.141326

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