Title :
Passive interrogation of low-finesse Fabry-Perot cavities using fiber Bragg gratings
Author :
Dahlem, M. ; Santos, J.L. ; Ferreira, L.A. ; Araújo, F.M.
Author_Institution :
Dept. of Phys., Porto Univ., Portugal
Abstract :
An investigation on the application of fiber Bragg gratings for the interrogation of interferometric low-finesse Fabry-Perot cavities is reported. The proposed scheme is based on the generation of two quadrature phase-shifted signals that allows the recovering of the change in the cavity length. Besides being totally passive, this technique offers a high degree of flexibility and has the potential to be used in the interrogation of very short cavities.
Keywords :
Bragg gratings; Fabry-Perot interferometers; Fabry-Perot resonators; displacement measurement; fibre optic sensors; temperature measurement; cavity length; fiber Bragg gratings; flexibility; interferometric Fabry-Perot cavities; low-finesse Fabry-Perot cavities; passive interrogation; quadrature phase-shifted signals; very short cavities; Fabry-Perot; Lighting; Optical fiber sensors; Optical interferometry; Optical refraction; Optical sensors; Optical signal processing; Phase shifting interferometry; Resonance; Signal generators;
Journal_Title :
Photonics Technology Letters, IEEE
