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- Title
Simultaneous force and temperature measurement using optical microfiber asymmetrical interferometer.
- Authors
Yu, Caibin; Chen, Xiaoxiao; Gong, Yuan; Wu, Yu; Rao, Yunjiang; Peng, Gangding
- Abstract
A novel optical microfiber asymmetric Fabry-Perot interferometric (MAFPI) sensor is developed for simultaneous measurement of force and temperature. The MAFPI structure is formed by a weak fiber Bragg grating (FBG), a section of the microfiber, and a cleaved fiber end surface. The narrowband beam reflected from the low-reflectivity FBG and the broadband beam from the Fresnel reflection interfere lead to its unique sensing performance. The force sensing is performed by detecting the bending-loss induced fringe contrast changes, while the Bragg wavelength shift is employed for temperature measurement. Sensitivities of 9.8 pm/°C and 0.025 dB/μN were obtained experimentally for temperature and force measurements, respectively.
- Publication
Photonic Sensors, 2014, Vol 4, Issue 3, p242
- ISSN
1674-9251
- Publication type
Article
- DOI
10.1007/s13320-014-0201-4