22 February 2018 Miniature optical fiber strain sensor based on Fabry-Perot interferometer
Author Affiliations +
We studied a miniature optical fiber sensor based on in-line Fabry-Perot interferometer for strain measurement. The sensor was fabricated by splicing a section of hollow core tube (HCT) between two single mode fibers. The reflective spectrum of the interferometer exhibits a number of resonance wavelength dips owing to destructive interference of two reflective lights. The experiment results demonstrate that, as the strain increased, the resonance wavelength exhibits a redshift behavior. The maximal strain sensitivity obtained by linear fitting is 4.55pm/με. The device proposed has high potential in construction engineering, industry production, and high speed rail due to its merits of electromagnetic immunity, miniature structure and ease of fabrication.
Conference Presentation
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Yundong Zhang, Yundong Zhang, Huaiyin Su, Huaiyin Su, Yongpeng Zhao, Yongpeng Zhao, Kai Ma, Kai Ma, Ping Yuan, Ping Yuan, "Miniature optical fiber strain sensor based on Fabry-Perot interferometer", Proc. SPIE 10548, Steep Dispersion Engineering and Opto-Atomic Precision Metrology XI, 105480F (22 February 2018); doi: 10.1117/12.2299221; https://doi.org/10.1117/12.2299221

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