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Optical Engineering

Design of the fiber optic distributed acoustic sensor based on Michelson interferometer and its location application
Author(s): Changsen Sun; Farhad Ansari
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Paper Abstract

A multiplexing method for a fiber optic acoustic sensor is proposed by arranging the working point of Michelson interferometer to improve the temporal resolution of reading the distributed sensor. The slope difference of two series sensors is extracted electrically and is employed to bias the working point. This characteristic is used to separate each sensor from one single data stream by the time difference it takes the acoustic signal to arrive at two sensors. Location application with the verification of the commercial piezoelectric transducer (PZT) proves its efficiency. The stress location is resolved to 5.6 cm at the 54-cm region in one channel.

Paper Details

Date Published: 1 October 2003
PDF: 7 pages
Opt. Eng. 42(10) doi: 10.1117/1.1605417
Published in: Optical Engineering Volume 42, Issue 10
Show Author Affiliations
Changsen Sun, Univ. of South Florida (United States)
Farhad Ansari, New Jersey Institute of Technology (United States)


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