FBG wide-range and high rate interrogation method

Giordana, Alejandro; Sicre, Enrique; Duchowicz, Ricardo

FBG wide-range and high rate interrogation method, (2014-07)

Giordana, Alejandro; Sicre, Enrique; Duchowicz, Ricardo

Instituto: Instituto de Tecnología
Temas: Fibra Óptica; Sensores
Extensión: 2 p.
Area de investigación: Informática / Telecomunicaciones / Electrónica
Línea de investigación: Aplicaciones Especiales de Fibras Ópticas
Responsable del proyecto: Sicre, Enrique
Nombre del proyecto: Desarrollo de sensores por fibra óptica: Análisis de esquemas de multiplexación e implementación de dispositivos para diversas aplicaciones metrológicas
Código del proyecto: P14T02

Resumen:

A FBG sensor interrogation method for measuring applications requiring a wide wavelength range and a high rate interrogation is presented. An optical intensity transfer with a cosine-like shape is obtained by a fiber interferometer, which is periodically changed to a sine-like transfer by a phase modulator. The FBG sensor reflected light, after propagated through the interferometer, is detected. A tracking algorithm is used for determining the central wavelength of the FBG sensor. An analysis of the involved systematic measuring error is carried out which illustrates the method feasibility.