Evanescent field imaging of an optical fiber Bragg grating

被引：12
|
作者：
Mills, JD [1 ]
Hillman, CWJ
Brocklesby, WS
Blott, BH
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
[2] Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England
来源：
APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 26期
关键词：
D O I：
10.1063/1.125535
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated the evanescent field associated with an optical fiber Bragg grating using the subwavelength imaging properties of scanning near-field optical microscopy. Imaging of either the field distribution within the grating, or the periodic refractive index changes along the grating can be performed by tuning the launched light on or off the grating resonance. These measurements reveal nonuniformity in the resonant standing-wave pattern that occur due to phase errors in the refractive index profile of the grating under study. (C) 1999 American Institute of Physics. [S0003-6951(99)03752-3].
引用
收藏
页码：4058 / 4060
页数：3
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