Fs-Laser Fabricated Miniature Fabry-Perot Interferometer in a No-Core Fiber for High-Temperature Applications

被引：3
|
作者：
Zhu, Chen [1 ]
Alsalman, Osamah [2 ]
Huang, Jie [3 ]
机构：
[1] Zhejiang Lab, Res Ctr Opt Fiber Sensing, Hangzhou 311100, Peoples R China
[2] King Saud Univ, Coll Engn, Dept Elect Engn, POB 800, Riyadh 11421, Saudi Arabia
[3] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA
来源：
SENSORS | 2023年 / 23卷 / 18期
关键词：
Fabry-Perot interferometer; femtosecond laser fabrication; high temperature; fiber optic sensor; FEMTOSECOND-LASER; WAVE-GUIDE; SENSORS;
D O I：
10.3390/s23187754
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This paper reports a fiber in-line Fabry-Perot interferometer (FPI) fabricated in a no-core fiber using the direct femtosecond laser writing technique for high-temperature sensing applications. Two in-line reflectors are directly inscribed in a no-core fiber to construct a low-finesse FPI. Fringe visibility greater than 10 dB is obtained from the reflection spectra of the fabricated no-core fiber FPIs. Temperature responses of a prototype no-core fiber FPI are characterized up to 1000 & DEG;C. The proposed configuration is compact and easy to fabricate, making it attractive for sensing applications in high-temperature harsh environments.
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页数：7
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