9000 hours-long high temperature annealing of regenerated Fiber Bragg Gratings

G. Laffont (1) , R. Cotillard (1) , P. Ferdinand (1)

1 LCFO - Laboratoire Capteurs Fibres Optiques

Regenerated Fiber Bragg Gratings have been annealed at high temperatures up to 890°C during 9000 hours in continuous. This test has been conducted in order to experimentally assess the long-term stability of regenerated FBGs dedicated to measurements in high temperature environments. The evolution of both reflectivities and Bragg wavelengths of four wavelength-multiplexed regenerated FBGs simultaneously annealed at respectively 760°C, 810°C, 850°C and 890°C is reported.

Keywords: Bragg wavelength; High temperature; High-temperature annealing; High-temperature environment; Optical fiber sensor; Bragg gratings; Fiber Bragg gratings; Sensors; Annealing; Long term stability

Domains: Instrumentation and Detectors [physics.ins-det]; Optics [physics.optics]; Thermics [physics.class-ph]

G. Laffont, R. Cotillard, P. Ferdinand. 9000 hours-long high temperature annealing of regenerated Fiber Bragg Gratings. Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, May 2013, Krakow, Poland. pp.87941X, ⟨10.1117/12.2025838⟩. ⟨cea-01823917⟩