Theoretical Model and Design Considerations of U-Shaped Fiber Optic Sensors: A Review
A wide range of geometrical deformations of fiber optic sensors (FOSs) have been explored to improve their performance. In particular, fiber optics bent into a U-shape present various advantages over other approaches and considerably improved performance in terms of sensitivity. The improvement in s...
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| Veröffentlicht in: | IEEE sensors journal 2020-12, Vol.20 (24), p.14578-14589 |
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| creator | Tan, Alfred Jia Yee Ng, Sing Muk Stoddart, Paul R. Chua, Hong Siang |
| description | A wide range of geometrical deformations of fiber optic sensors (FOSs) have been explored to improve their performance. In particular, fiber optics bent into a U-shape present various advantages over other approaches and considerably improved performance in terms of sensitivity. The improvement in sensitivity can be understood as a result of the enhanced penetration depth of the evanescent field and higher evanescent power in the cladding or surrounding medium. Consequently, a larger portion of the propagating light experiences changes due to variations in the local refractive index (RI). In view of their significant benefits, U-shaped FOSs deserve a thorough investigation. This review outlines the theoretical model and design considerations along with the fabrication process of U-shaped FOSs. In addition, this paper aims to provide researchers with guidelines on the factors to consider in designing and optimizing U-shaped FOSs. |
| doi_str_mv | 10.1109/JSEN.2020.3011173 |
| format | Article |
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| source | IEEE Electronic Library (IEL) |
| subjects | Absorption Evanescent waves fiber optic sensors Fiber optics intrinsic sensor macrobending Optical fiber sensors Optical fibers Optical surface waves Penetration depth Refractivity Sensitivity Sensors U-bent U-shaped |
| title | Theoretical Model and Design Considerations of U-Shaped Fiber Optic Sensors: A Review |
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