title: Development of a multi-point polarization-based vibration sensor.
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.
authors.affiliation: Electromagnetism and Telecommunication Department, Faculté Polytechnique, Université de Mons, Place du Parc 20, 7000 Mons, Belgium. nicolas.linze@umons.ac.be
authors.forename: Nicolas
authors.initials: N
authors.lastname: Linze
authors.forename: Pierre
authors.initials: P
authors.lastname: Tihon
authors.forename: Olivier
authors.initials: O
authors.lastname: Verlinden
authors.forename: Patrice
authors.initials: P
authors.lastname: Mégret
authors.forename: Marc
authors.initials: M
authors.lastname: Wuilpart