Initial kinetics of formation of Bragg gratings in standard optical fibers

被引：0
作者：
Santiago Nunez, I. [1 ]
Shlyagin, M. G. [1 ]
Beltran-Perez, G. [2 ]
机构：
[1] Ctr Invest Cientff Educ Super Ensenad, Carretera Ensenada Tijuana 3918 Zona Playitas, Ensenada 22860, Baja California, Mexico
[2] Benemerita Univ Autonoma Puebla, Fac Ciencias Fis Matemat, Av San Claudio 18 Sur, Puebla, Mexico
来源：
REVISTA MEXICANA DE FISICA | 2017年 / 63卷 / 02期
关键词：
Bragg gratings; photosensitivity; color centers; sensor; SILICA GLASS; ABSORPTION; UV; PHOTOSENSITIVITY; GERMANIUM; EXPOSURE; CENTERS;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Results on experimental study on kinetics of fiber Bragg gratings formation in the standard telecom optical fiber SMF-28 at initial stage of irradiation are presented. For low fluence per pulse, it was found that the fast formation of color centers Ge(1) is a dominant mechanism of the refractive index change at initial stage for accumulated fluence of below 0.02 J/cm(2) at the wavelength of 266 nm. At low fluence per pulse, the induced change of the refractive index does not depend on UV light intensity and saturates at a level of similar to 2 x 10(-6). Dominance of the Ge(1) color center mechanism in the FBG formation at the initial stage makes possible a cost-effective recording of large arrays of weak FBGs for sensors utilizing lasers of low energy per pulse.
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页码：124 / 129
页数：6
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