Interrogation of interferometric sensors with a tilted fiber Bragg grating

Authors :: Silvia Diaz
Jose Miguel Lopez-Higuera
M. A. Quintela
Cesar Jauregui
Antonio Quintela
Adolfo Cobo
Universidad de Cantabria
Source :: Proceedings of SPIE, 2004, vol. 5502, 60-63, Second European Workshop on Optical Fibre Sensors, Santander, 2004, UCrea Repositorio Abierto de la Universidad de Cantabria, Universidad de Cantabria (UC)
Publication Year :: 2004
Publisher :: SPIE, 2004.
Abstract: A novel method for interrogating interferometric sensors, based on analyzing the characteristics of the light expelled from a tilted fiber Bragg grating and captured by a photodetector linear array, is presented in the paper. Also a novel algorithm for the recovery of the measured information is proposed and its performance explored. It belongs to the parametric frequency estimation methods and is an adaptation of the MUltiple SIgnal Classification (MUSIC) algorithm. Finally an insight to the possibility of interrogating multiplexed interferometric sensors is given.