Open AccessDevelopment of a multi-point polarization-based vibration sensor
Author(s) -
Nicolas Linze,
Pierre Tihon,
Olivier Verlinden,
Patrice Mégret,
Marc Wuilpart
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.005606
Subject(s) - polarizer , optics , fiber bragg grating , polarization (electrochemistry) , fiber optic sensor , vibration , birefringence , polarization maintaining optical fiber , optical fiber , multiplexing , transducer , materials science , wavelength , acoustics , physics , computer science , telecommunications , chemistry
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.