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Physics Journal of the Indonesian Physical Society
http://situs.jurnal.lipi.go.id/pjhfi/   -   http://pj.hfi.fisika.net


Arif Hidayat1, Pierre Niay2, Marc Douay2, Bertrand Poumellec3, Farid Kherbouche3 and I. Riant4

1Laboratorium ELIN, Jurusan Fisika, FMIPA, Universitas Negeri Malang, Indonesia
2Laboratoire de Physique des Lasers, Atomes et Molécules, UMR 8523 Centre d'Etude et de Recherche sur les Lasers et Applications (CERLA), Université de Lille I UFR de Physique, Bâtiment P5, 59655 Villeneuve d'Ascq Cedex, France
3Laboratoire de Thermodynamique et Physico-Chimie des Matériaux, Université de Paris-Sud, Bâtiment 414, 91405 Orsay, France
4Alcatel Corporate Research Center, Route de Nozay, 91460 Marcoussis, France

This paper reports that reversible changes in the reflectivity of Bragg gratings could be induced by a change in the temperature of the grating (77 K < T < 573 K). The changes proved to be larger in highly doped Ge fibers than in standard fibers, whereas they could hardly be detected in hydrogenated fibers. The sign of the change for type I gratings was opposite to that for type IIA gratings. The changes are likely due to a temperature-induced increase (or a decrease) in the amplitude of the refractive index modulation. Possible mechanisms of these changes in modulation are discussed. Interestingly for the purpose of correcting data of isothermal accelerated aging experiments, a numerical relation that accounts for the temperature-induced changes in type I grating reflectivity is given .

Publication : Physics Journal IPS Proceeding Supplement A6 (2002) 0519 » page of Content
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