Abstract
The behavior of the concentration of photoinduced color centers in optical fibers was compared with that of the index modulation associated with fiber Bragg gratings (FBG's) written in the same fibers. We find that the fluence dependence of the photoinduced Ge center, its thermal annealing behavior, and its reaction with are similar to that of the index modulation generated in both -loaded and unloaded fibers. The much higher photosensitivity of -loaded fibers is attributed to the much higher formation efficiency of Ge centers, with an additional contribution from GeH. A diamagnetic structure, possibly densification, is also found to contribute to the index modulation of FBG's.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Bruno Leconte, Wen-Xiang Xie, Marc Douay, Pascal Bernage, Pierre Niay, Jean François Bayon, Eric Delevaque, and Hubert Poignant
Appl. Opt. 36(24) 5923-5930 (1997)
L. B. Fu, G. Tan, W. J. Xu, H. L. An, X. M. Cui, X. Z. Lin, and H. D. Liu
Opt. Lett. 25(8) 527-529 (2000)
T. Taunay, P. Bernage, M. Douay, W. X. Xié, G. Martinelli, P. Niay, J. F. Bayon, E. Delevaque, and H. Poignant
J. Opt. Soc. Am. B 14(4) 912-925 (1997)