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Development of a multi-point polarization-based vibration sensor.

Authors
  • Linze, Nicolas
  • Tihon, Pierre
  • Verlinden, Olivier
  • Mégret, Patrice
  • Wuilpart, Marc
Type
Published Article
Journal
Optics Express
Publisher
The Optical Society
Publication Date
Mar 11, 2013
Volume
21
Issue
5
Pages
5606–5624
Identifiers
DOI: 10.1364/OE.21.005606
PMID: 23482133
Source
Medline
License
Unknown

Abstract

In this paper we propose a novel kind of multi-point vibration sensor based on the polarization properties of light. Its principle relies on the combination of mechanical transducers with fiber Bragg gratings. When subject to vibrations, the mechanical transducers induce birefringence variations within the fiber and in turn modify the state of polarization, which appears as a power variation after going through a polarizer. The FBGs reflect light from different positions of the sensing fiber and provide wavelength multiplexing. We show that this sensor can provide the vibration frequencies in a quasi-distributed manner.

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