Femtosecond Laser Inscribed Small-Period Long-Period Fiber Gratings With Dual-Parameter Sensing

被引：47
|
作者：
Zheng, Zhong-Ming [1 ]
Yu, Yong-Sen [1 ]
Zhang, Xuan-Yu [1 ]
Guo, Qi [1 ]
Sun, Hong-Bo [1 ,2 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China
[2] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement & Instruments, Beijing 100084, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2018年 / 18卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Fiber optic sensors; femtosecond laser direct writing; small-period long-period fiber gratings; REFRACTIVE-INDEX; SENSORS; POLYMER; STRAIN;
D O I：
10.1109/JSEN.2017.2761794
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：
A small-period long-period grating (LPG) with a period of 40 mu m fabricated in a single-mode fiber by femtosecond laser direct writing has been demonstrated. A series of high-order Bragg resonant peaks of Bragg grating and attenuation bands of LPG can be observed simultaneously in the broadband spectrum range that exhibited different responses to surrounding refractive index, temperature, and axial strain. Meanwhile, we provided a sensitivity matrix to correct the errors caused by temperature in measurements of refractive index and strain to achieve a dual-parameter fiber sensor at high temperature.
引用
收藏
页码：1100 / 1103
页数：4
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