Three-hole microstructured optical fiber for efficient fiber Bragg grating refractometer

被引：101
作者：
Huy, Minh Chau Phan
Laffont, Guillaume [1 ]
Dewynter, Veronique
Ferdinand, Pierre
Roy, Philippe
Auguste, Jean-Louis
Pagnoux, Dominique
Blanc, Wilfried
Dussardierg, Bernard
机构：
[1] Ctr Etud Saclay, CEA LIST, F-91191 Gif Sur Yvette, France
[2] CNRS, UMR 6172, F-87060 Limoges, France
[3] Univ Nice, CNRS, UMR 6622, LPMC FOA, F-06108 Nice, France
来源：
OPTICS LETTERS | 2007年 / 32卷 / 16期
关键词：
D O I：
10.1364/OL.32.002390
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a photosensitive three-hole microstructured optical fiber specifically designed to improve the refractive index sensitivity of a standard fiber Bragg grating (FBG) sensor photowritten in the suspended Ge-doped silica core. We describe the specific photowriting procedure used to realize gratings in such a fiber. We then determine their spectral sensitivity to the refractive index changes of material filling the holes surrounding the core. The sensitivity is compared with that of standard FBGs photowritten in a six-hole fiber with a larger core diameter. We demonstrate an improvement in the sensitivity by two orders of magnitude and reach a resolution of 3 x 10(-5) and 6 x 10(-6) around mean refractive index values of 1.33 and 1.40, respectively. (C) 2007 Optical Society of America.
引用
收藏
页码：2390 / 2392
页数：3
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