Simultaneous measurement for strain and temperature based on a long-period grating combined with a high-birefringence fiber loop mirror

被引：107
|
作者：
Frazao, O. [1 ]
Marques, L. M.
Santos, S.
Baptista, J. M.
Santos, J. L.
机构：
[1] INESC, P-4169007 Oporto, Portugal
[2] Inst Super Engn Porto, P-4200072 Oporto, Portugal
[3] Univ Madeira, Dept Matemat & Engn, P-9000390 Funchal 9000390, Portugal
[4] Univ Porto, Dept Fis, P-4169007 Oporto, Portugal
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 21-24期
关键词：
fiber-loop mirror; long-period grating (LPG); optical fiber sensors; strain-temperature discrimination;
D O I：
10.1109/LPT.2006.886139
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：
This work presents an alternative solution for simultaneous measurement of strain and temperature. The sensing head is formed by a long-period fiber grating combined with a high-birefringence fiber loop mirror resulting in a configuration capable of temperature and strain discrimination. These optical devices have opposite sensitivity responses when a variation of temperature and/or strain is applied. Maximum errors of +/- 0.8 degrees C and +/- 21 mu epsilon are reported over 60 degrees C and 700-mu epsilon measurement ranges, respectively.
引用
收藏
页码：2407 / 2409
页数：3
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