An intrinsic graded-index multimode optical fibre strain-gauge

被引：8
|
作者：
Ribeiro, RM [1 ]
Werneck, MM
机构：
[1] Univ Fed Rio de Janeiro, Lab Instrumentacao & Foton COPPE, BR-21945970 Rio De Janeiro, RJ, Brazil
[2] Univ Estado Rio De Janeiro, Dept Engn Eletron, Rio De Janeiro, Brazil
[3] Univ Catolica Petropolis, Petropolis, Brazil
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2004年 / 111卷 / 2-3期
关键词：
strain-gauge; optical fibre sensor; graded-index multimode fibre;
D O I：
10.1016/j.sna.2003.11.009
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on a novel strain-gauge based on a graded-index (GI) multimode (MM) optical fibre fed through a fusion spliced singlemode (SM) fibre. The lowest order spatial mode is launched and propagates twice through the MM sensing fibre. Mismatch between the sinusoidal trajectories of the propagating modes relative to GI MM fibre pitch occurs due to the strain and is on-line converted to intensity modulation in the MM/SM interface. Results have shown linear response up to 4250 micro-strains (mue) range and resolution of 9 [Le. (C) 2003 Published by Elsevier B.V.
引用
收藏
页码：210 / 215
页数：6
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