1. A spiral-polished fiber sensor for strain and temperature measurement.
- Author
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Ma, Yiwei, Su, Chunbo, Yi, Yang, Zhao, Min, Sun, Jing, Wang, Senyu, Li, Xiaoyang, Tao, Geng, Yu, Shengnan, Tong, Chengguo, Sun, Weimin, and Yuan, Libo
- Subjects
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STRAIN sensors , *TEMPERATURE measurements , *TEMPERATURE sensors , *OPTICAL fiber detectors , *SPIRAL antennas - Abstract
We propose and experimentally investigate a spiral-polished single-multi-single-mode (SP-SMS) fiber sensor for the simultaneous measurement of strain and temperature. This special spiral shape on a multimode fiber is fabricated by a high-frequency CO2 laser, which excites higher order cladding modes in the interference process and leads to high strain sensitivity. Experimental results show that the strain sensitivity for the proposed structure in the transmission spectrum of two marked interference dips is − 17 pm/με and − 1 pm/με in the range of 0–600 με. Moreover, temperature sensitivities of 10 pm/℃ and 13.3 pm/℃ are obtained in the range of 30–150 ℃. Furthermore, the proposed sensor is inexpensive, is easy to fabricate and has a compact structure. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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