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Optical Engineering

Phase sensitivity normalization in time-division multiplexing of polarization-insensitive interferometric sensors using phase-generated carrier demodulation
Author(s): Shih-Chu Huang; Wuu Wen Lin; Mao-Hsiung Chen
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Paper Abstract

The time-division multiplexing of a polarization-insensitive fiber optic Michelson interferometric sensor (TDM-PIFOMI) using phasegenerated carrier (PGC) demodulation is presented. A new automatic gain control (AGC) process for the phase sensitivity normalization of each sensor in the TDM-PIFOMI system using the PGC demodulation is described and demonstrated. In the TDM-PIFOMI system, this process can eliminate effects including the fluctuation of the laser source intensity and the variation of the light pulse intensity distribution in all fibers. The advantage of the AGC process is to implement the process under the optimum condition of the PGC demodulation.

Paper Details

Date Published: 1 September 1996
PDF: 7 pages
Opt. Eng. 35(9) doi: 10.1117/1.600831
Published in: Optical Engineering Volume 35, Issue 9
Show Author Affiliations
Shih-Chu Huang, National Sun Yat-Sen Univ. (Taiwan)
Wuu Wen Lin, Chung Shan Institute of Science and Technology (Taiwan)
Mao-Hsiung Chen, National Sun Yat-Sen Univ. (Taiwan)

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