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2013-10-15 - Article/Dans un journal avec peer-review - Anglais - 4 page(s)

Bueno Martinez Antonio , Kinet Damien , Mégret Patrice , Caucheteur Christophe , "Fast thermal regeneration of fiber Bragg gratings" in Optics Letters, 38, 20, http://dx.doi.org/10.1364/OL.38.004178

  • Edition : American Institute of Physics, New York (NY)
  • Codes CREF : Capteurs et périphériques (DI2563), Optique des fibres (électromagnétisme) (DI1252)
  • Unités de recherche UMONS : Electromagnétisme et Télécommunications (F108)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)

Abstract(s) :

(Anglais) In this paper we report a fast thermal regeneration of Type I FBGs inscribed with a UV laser in up to four different optical fibers: hydrogenated standard fiber, hydrogenated highly Ge doped fiber, hydrogenated photosensitive fiber, and non-hydrogenated fiber. The thermal treatment consists in directly introducing the optical fiber into a preheated oven. The preheat temperature depends on the type of fiber used and is higher enough to erase the grating, and to regenerate it afterwards. The best results are obtained with hydrogenated photosensitive fiber and highly Ge doped fiber, whereas no satisfactory results were obtained with hydrogenated standard fiber and non-hydrogenated photosensitive fiber. A regenerated grating with only 1.6 dB of loss was obtained in 10 minutes reducing the time needed by a factor of 5.7. By adjusting the temperature of the oven, regenerated gratings of 13.7 dB of loss in 31 seconds and 5.8 dB of loss in 3 minutes were obtained. The factors of improvement in time are 110.3 and 19 respectively.


Mots-clés :
  • (Anglais) Fiber optics sensors
  • (Anglais) Fiber Bragg gratings
  • (Anglais) Fiber materials
  • (Anglais) Thermal effects