A Miniaturized Optical Fiber Tip High-Temperature Sensor Based on Concave-Shaped Fabry-Perot Cavity

被引：60
作者：
Zhu, Chen [1 ]
Zhuang, Yiyang [1 ]
Zhang, Bohong [1 ]
Roman, Muhammed [1 ]
Wang, Philip P. [2 ]
Huang, Jie [1 ]
机构：
[1] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA
[2] Centennial High Sch, Ellicott City, MD 21042 USA
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 01期
关键词：
High-temperature; extrinsic Fabry-Perot interferometer; optical fiber sensor; hollow core fiber; BRAGG-GRATING SENSOR; FEMTOSECOND LASER;
D O I：
10.1109/LPT.2018.2881721
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 present a miniaturized optical fiber tip FabryPerot interferometer for high-temperature measurement based on a concave-shaped cavity. The fabrication process of the diaphragm-free Fabry-Perot cavity is quite simple, involving only two steps: fusion splicing and cleaving. By adjusting the arc power during fusion splicing, a concave-shaped structure is obtained, through which the light is coupled/split into the wall of the spliced hollow core fiber. By cleaving the end-face of the hollow-core fiber, a concave-shaped diaphragm-free Fabry-Perot interferometer is formed. The temperature response of the sensor was demonstrated, showing a high-temperature tolerance up to 1000 degrees C and a sensitivity of 0.01226 nm/degrees C. The proposed sensor, with all-silica-structure, high compactness, robustness, and ease of fabrication, could find wide applications in high-temperature harsh environments.
引用
收藏
页码：35 / 38
页数：4
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