SMS fiber optic microbend sensor structures: effect of the modal interference

被引：29

作者：

Kumar, A

Varshney, RK ^{[1
]}

Kumar, R

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

[2] CHTM, Albuquerque, NM 87106 USA

来源：

OPTICS COMMUNICATIONS | 2004年 / 232卷 / 1-6期

关键词：

fiber optic sensors; microbend sensors; SMS structures; modal interference;

D O I：

10.1016/j.optcom.2003.12.077

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examine the effect of modal interference on the performance of a single mode-multimode-single mode (SMS) fiber optic microbend sensor structure. The study shows that if the coupling from higher order modes of the sensing multimode fiber to the lead-out single mode (SM) fiber is not zero, the output power and hence the microbend sensitivity of the structure depends strongly on the position of the microbends in the fiber. A simple experiment is carried out to study the above effect whose results agree very well with the theoretical predictions. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：239 / 244

页数：6

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