Fiber Mach-Zehnder interferometer based on microcavities for high-temperature sensing with high sensitivity

L. Jiang*, J. Yang, S. Wang, B. Li, M. Wang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

227 引用 (Scopus)

摘要

A high-temperature sensor based on a Mach-Zehnder interferometer (MZI) in a conventional single-mode optical fiber is proposed and fabricated by concatenating two microcavities separated by a middle section. A femtosecond laser is used to fabricate a microhole on the center of a fiber end. Then a micro-air-cavity is formed by splicing the microholed fiber end with a normal fiber end. The interferometer is applied for high-temperature sensing, in the range of 500-1200 °C, with a sensitivity of 109pm/°C that, to the best of our knowledge, is highest in silica fiber temperature sensors. Also, the interferometer is insensitive to external refractive index (RI), which is desirable for temperature sensors.

源语言英语
页(从-至)3753-3755
页数3
期刊Optics Letters
36
19
DOI
出版状态已出版 - 1 10月 2011

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