Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings

Minh-Châu Phan Huy (1, 2) , Guillaume Laffont (1) , Véronique Dewynter (1) , Pierre Ferdinand (1) , Dominique Pagnoux (3) , Bernard Dussardier (4) , Wilfried Blanc (4)

1 Centre d'Etude de Saclay
2 LPN - Laboratoire de photonique et de nanostructures
3 PHOTONIQUE
4 LPMC - Laboratoire de physique de la matière condensée

The thermal drift of the characteristic wavelength of fiber Bragg gratings (FBGs) photowritten in the core of microstructured fibers (MOFs) is significantly reduced by inserting a liquid of suitable refractive index into their holes. For instance, the spectral range of variations is divided by a factor of 4 over a temperature range larger than 20 °C in a six-hole MOF, and the maximum sensitivity is reduced. Such passive FBG temperature compensation technique is of great interest for applications involving accurate sensing free of thermal effects.

Mots clés: fiber Bragg grating (FBG); microstructured optical fibers (MOFs); passive temperature compensation; refractive index liquid

Domaines: Optique [physics.optics]; Optique / photonique

Minh-Châu Phan Huy, Guillaume Laffont, Véronique Dewynter, Pierre Ferdinand, Dominique Pagnoux, et al.. Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings. IEEE Sensors Journal, 2008, 8 (7), pp.1073-1078. ⟨10.1109/JSEN.2008.926169⟩. ⟨hal-00459457⟩