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Simultaneous measurement of strain and temperature using type I and pre-strained fiber Bragg gratings

Aashia, R. ; Asokan, S.

2009 IEEE Sensors, 2009, p.1229-1231

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Título:
Simultaneous measurement of strain and temperature using type I and pre-strained fiber Bragg gratings
Autor: Aashia, R. ; Asokan, S.
Assuntos: Bragg gratings ; Capacitive sensors ; Fiber gratings ; Instruments ; Optical fiber sensors ; Optical fibers ; Refractive index ; Strain measurement ; Temperature sensors ; Wavelength measurement
É parte de: 2009 IEEE Sensors, 2009, p.1229-1231
Descrição: Strain and temperature sensitivities of a type I Bragg grating inscribed in a germania doped silica fiber, fabricated under normal conditions and zero strain, are compared with that of a Bragg grating inscribed under pre-strained condition. The results obtained reveal that the strain and temperature sensitivities of the two gratings are different. Based on these results, we demonstrate a technique which enables discrimination of strain and temperature in a Fiber Bragg Grating (FBG) with a linear response. The present technique allows for an easy implementation of the sensor by providing a direct access to the grating region in the fiber and demands only a simple interrogation system.
Editor: IEEE
Idioma: Inglês

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