Multiplexed regenerated fiber Bragg gratings for high-temperature measurement

G. Laffont (1) , Romain Cotillard (1) , Pierre Ferdinand (1)

1 LCFO (CEA, LIST) - Laboratoire Capteurs Fibres Optiques (CEA, LIST)

A high-temperature gradient of a conventional tubular furnace is characterized using a single-fiber sensing line with wavelength-multiplexed short-length-regenerated fiber Bragg gratings. The multiplexed gratings are simultaneously regenerated using a high-temperature annealing process. Temperature calibration from ambient temperatures up to 900 ◦C is conducted leading to a standard deviation of 0.15 ◦C after the polynomial fitting of the wavelength shift with the temperature.

Mots clés: regenerated fiber Bragg gratings; high temperature; multiplexing; Fiber Bragg Grating; sensor; Optical Fiber Sensor; instrumentation, Distributed and Quasi-distributed sensing

Domaines: Instrumentations et Détecteurs [physics.ins-det]; Optique / photonique

G. Laffont, Romain Cotillard, Pierre Ferdinand. Multiplexed regenerated fiber Bragg gratings for high-temperature measurement. Measurement Science and Technology, 2013, 24, pp.094010. ⟨10.1088/0957-0233/24/9/094010⟩. ⟨cea-01802609⟩