Title :
Nonlinear Temperature Dependence of Etched Fiber Bragg Gratings
Author :
Kamikawachi, Ricardo C. ; Abe, Ilda ; Kalinowski, Hypolito J. ; Fabris, José L. ; Pinto, João L.
Author_Institution :
Univ. Tecnologica Federal do Parana, Curitiba
Abstract :
In this work, we experimentally study the thermal sensitivity of etched fiber Bragg gratings immersed in surrounding media with high refractive index (1.444). The fiber diameter was reduced at four different values 15, 10, 9, and 8 mum. A nonlinear behavior is observed, due two combined effects: the silica thermo-optic effect that causes a red shift and the surrounding thermo-optic effect that causes a blue shift.
Keywords :
Bragg gratings; etching; fibre optic sensors; red shift; silicon compounds; thermo-optical effects; blue shift; etched fiber Bragg gratings; nonlinear temperature dependence; red shift; refractive index; silica thermo-optic effect; size 10 mum; size 15 mum; size 8 mum; size 9 mum; thermal sensitivity; Bragg gratings; Chemicals; Etching; Fiber gratings; Optical fiber sensors; Refractive index; Sensor phenomena and characterization; Temperature dependence; Temperature sensors; Thermooptic effects; Etched fiber; fiber Bragg grating; refractive index; temperature;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.905032
