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Proceedings Paper

Two-sensor multiplexing in a split-cavity cross-coupled extrinsic fiber interferometer
Author(s): Venkatapura S. Sudarshanam; Rajat R. Dhawan; Tuan A. Tran; Mary K. Burford; Richard O. Claus
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Paper Abstract

A multiplexed configuration of the fiber optic extrinsic Fabry-Perot interferometer is demonstrated by using two sensor heads on a single directional coupler in a split-cavity cross- coupled extrinsic fiber interferometric (SCEFI) arrangement. The provision of four-beam interference along with a spectrum analysis detection scheme devised for the SCEFI eliminates the need for quadrature phase biasing and leads to independent measurements of the phase shift in the two sensor heads. Good agreement between the experimental results and the model for interference is demonstrated.

Paper Details

Date Published: 12 July 1993
PDF: 9 pages
Proc. SPIE 1918, Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation, (12 July 1993); doi: 10.1117/12.147976
Show Author Affiliations
Venkatapura S. Sudarshanam, Virginia Polytechnic Institute and State Univ. (United States)
Rajat R. Dhawan, Virginia Polytechnic Institute and State Univ. (United States)
Tuan A. Tran, Virginia Polytechnic Institute and State Univ. (United States)
Mary K. Burford, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 1918:
Smart Structures and Materials 1993: Smart Sensing, Processing, and Instrumentation
Richard O. Claus, Editor(s)

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