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Proceedings Paper

Composite cavity fiber tip Fabry-Perot interferometer for temperature sensing
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Paper Abstract

A simple composite cavity fiber tip (CCFT) Fabry-Perot interferometer (FPI) is proposed and experimentally demonstrated. The composite cavity is composed of an air cavity and a silica cavity. The air cavity is an elliptical air hole embedded in the SMF. The silica cavity is a short section of SMF cascaded to the air cavity. The CCFT FPIs were applied for temperature sensing. To take advantage of the FP’s resonant property, a laser whose wavelength is tuned to the steep slope of one of the FP resonances is used to interrogate the CCFT FPI system. With a laser interrogation, a small wavelength shift caused by a small temperature change will then be translated into a large change in output power, which can be easily detected. Therefore, the temperature sensitivity can be enhanced significantly, and the CCFT FPI can routinely resolve much smaller temperature changes.

Paper Details

Date Published: 26 March 2019
PDF: 5 pages
Proc. SPIE 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology, 1093402 (26 March 2019); doi: 10.1117/12.2515591
Show Author Affiliations
Li Zhao, Harbin Institute of Technology (China)
Yundong Zhang, Harbin Institute of Technology (China)
Yunhao Chen, Harbin Institute of Technology (China)
Jinfang Wang, Shanghai Aerospace Control Technology Institute (China)
Huaiyin Su, Harbin Institute of Technology (China)
Ying Guo, Harbin Institute of Technology (China)
Fuxing Zhu, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 10934:
Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology
Selim M. Shahriar; Jacob Scheuer, Editor(s)

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