Recent progress in long-period fibre grating sensors written by high-frequency CO2 laser pulses

被引：1
|
作者：
Rao, YJ [1 ]
机构：
[1] Chongqing Univ, Dept Opt Engn, Opt Fiber Technol Grp, Chongqing 400044, Peoples R China
来源：
Advanced Sensor Systems and Applications II Pt 1and 2 | 2004年 / 5634卷
关键词：
optical fiber sensors; long-period fiber gratings (LPFGs); CO2; laser; strain gauge; load cell; etching;
D O I：
10.1117/12.580301
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this paper, we report recent progress in long-period fiber gratings (LPFGs) fabricated by using a new writing technique that is mainly based on the thermal shock effect of focused high-frequency CO2 laser pulses at several kHz. The writing mechanism of this technique is reported for the first time to our knowledge. Novel sensor systems for low-cost measurement of strain and dynamic transverse load are proposed and demonstrated. In addition, phase-shifted LPFGs are fabricated and used for sensing of strain and temperature. Finally, the etching characteristics of these LPFG sensors are investigated.
引用
收藏
页码：1 / 9
页数：9
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