A single-mode fiber-optic ring resonator is used as a multipath reference for multiplexing white light interferometric sensors. The theory of applying the resonator for multiplexing Michelson-type interferometer sensor is presented. The capacity of the technique in terms of maximum sensor number is evaluated for both a linear array and a M × N sensor matrix. Experimental results for a three-sensor linear array and 2 × 1 sensor matrix are also presented.


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  1. F. Zarinetchi, S. P. Smith and S. Ezekiel, "Stimulated Brillouin fiber-optic laser gyroscope", Opt. Lett., vol. 16, pp. 229-231, 1991.
  2. K. Kalli and D. A. Jackson, "Ring resonator optical spectrum analyzer with 20 kHz resolution", Opt. Lett., vol. 17, pp. 1090-1092, 1992.

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