Interrogation unit for fiber Bragg grating sensors that uses a slanted fiber grating.
A novel interrogation technique for fiber Bragg gratings is presented. It is based on measuring the characteristics of the outgoing near-field radiation from a tilted fiber grating. This scheme was experimentally checked and was found to offer a wide wavelength interrogation range as well as a good linearity, stability, and wavelength resolution.
Jáuregui
César
C
Grupo de Ingeniería Fotónica, Departamento Transports Elèctrics Interurbans S.A., University of Cantabria, Avenida Los Castros s/n, c.p. 39005 Santander, Spain. jauregui@teisa.unican.es
Quintela
Antonio
A
López-Higuera
José Miguel
JM