Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber
A torsion sensor with directional discrimination based on a single-mode–twisted multimode–single-mode (STMS) fiber structure is demonstrated. The STMS fiber structure is fabricated by fusion-splicing a segment of multimode fiber (MMF) between two single-mode fibers (SMFs), where the MMF is simultane...
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MDPI AG
2025-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/7/2091 |
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| author | Wenlei Yang Ke Tian Le Li |
| author_facet | Wenlei Yang Ke Tian Le Li |
| author_sort | Wenlei Yang |
| collection | DOAJ |
| description | A torsion sensor with directional discrimination based on a single-mode–twisted multimode–single-mode (STMS) fiber structure is demonstrated. The STMS fiber structure is fabricated by fusion-splicing a segment of multimode fiber (MMF) between two single-mode fibers (SMFs), where the MMF is simultaneously heated and twisted to form paired helical-type structures. The experimental results indicate that the resonance wavelength shifts towards shorter wavelengths as the twist rate increases in the clockwise direction, while an opposite shift occurs in the counterclockwise direction. Within a twist rate range of −5.2 rad/m~5.2 rad/m, the wavelength and transmission sensitivities are determined to be −1.38 nm/rad·m<sup>−1</sup> and 3.12 dB/rad·m<sup>−1</sup>, respectively. Furthermore, the proposed twist sensor exhibits minimal temperature crosstalk of 0.0072 (rad/m)/°C, making it highly desirable for mitigating temperature-induced cross-sensitivity in torsion measurement applications. |
| format | Article |
| id | doaj-art-257bd9ade19b4b868f7e5ea9d4163bb8 |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-257bd9ade19b4b868f7e5ea9d4163bb82025-08-20T03:08:54ZengMDPI AGSensors1424-82202025-03-01257209110.3390/s25072091Directional Torsion Sensor Based on a Paired Helical-Type Multimode FiberWenlei Yang0Ke Tian1Le Li2College of Information and Intelligence Engineering, Zhejiang Wanli University, Ningbo 315100, ChinaCollege of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Information and Intelligence Engineering, Zhejiang Wanli University, Ningbo 315100, ChinaA torsion sensor with directional discrimination based on a single-mode–twisted multimode–single-mode (STMS) fiber structure is demonstrated. The STMS fiber structure is fabricated by fusion-splicing a segment of multimode fiber (MMF) between two single-mode fibers (SMFs), where the MMF is simultaneously heated and twisted to form paired helical-type structures. The experimental results indicate that the resonance wavelength shifts towards shorter wavelengths as the twist rate increases in the clockwise direction, while an opposite shift occurs in the counterclockwise direction. Within a twist rate range of −5.2 rad/m~5.2 rad/m, the wavelength and transmission sensitivities are determined to be −1.38 nm/rad·m<sup>−1</sup> and 3.12 dB/rad·m<sup>−1</sup>, respectively. Furthermore, the proposed twist sensor exhibits minimal temperature crosstalk of 0.0072 (rad/m)/°C, making it highly desirable for mitigating temperature-induced cross-sensitivity in torsion measurement applications.https://www.mdpi.com/1424-8220/25/7/2091torsion sensormultimode interferencedirectional discriminationoptical fiber sensor |
| spellingShingle | Wenlei Yang Ke Tian Le Li Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber Sensors torsion sensor multimode interference directional discrimination optical fiber sensor |
| title | Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber |
| title_full | Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber |
| title_fullStr | Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber |
| title_full_unstemmed | Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber |
| title_short | Directional Torsion Sensor Based on a Paired Helical-Type Multimode Fiber |
| title_sort | directional torsion sensor based on a paired helical type multimode fiber |
| topic | torsion sensor multimode interference directional discrimination optical fiber sensor |
| url | https://www.mdpi.com/1424-8220/25/7/2091 |
| work_keys_str_mv | AT wenleiyang directionaltorsionsensorbasedonapairedhelicaltypemultimodefiber AT ketian directionaltorsionsensorbasedonapairedhelicaltypemultimodefiber AT leli directionaltorsionsensorbasedonapairedhelicaltypemultimodefiber |