Curvature Temperature Sensor Based on Hollow-core Fiber Splicing Structure
Citation
徐心怡, 周 蕊, 李 瑞, 李 飞, 刘颖刚. (2025). 一种基于空芯光纤拼接结构的曲率温度传感器 [Curvature Temperature Sensor Based on Hollow-core Fiber Splicing Structure]. 光电技术应用 [ELECTRO-OPTIC TECHNOLOGY APPLICATION], 40(1), 58-62.
Keywords
- Fiber optic sensor
- Curvature sensor
- Temperature sensor
- Hollow-core fiber (HCF)
- No-core fiber (NCF)
- Single-mode fiber (SMF)
- Splicing structure
- Mach-Zehnder interferometer (MZI)
- Fabry-Pérot interferometer (FPI)
- Sensitivity
- Wavelength drift
- Power change
- Interference spectrum
- Biomedical
- Material testing
- Cable monitoring
- Oil and gas
- Aerospace
- Industrial production
Brief
The article presents the design and experimental validation of a highly sensitive and low-cost fiber optic sensor based on a spliced hollow-core fiber structure that combines a Mach-Zehnder interferometer (MZI) and a Fabry-Pérot interferometer (FPI) for the simultaneous measurement of curvature and temperature, achieving maximum sensitivities of 64.7 pm/℃ for temperature and 27.044 dBm/m-1 for curvature.
Summary
Researchers designed and built a low-cost, highly sensitive fiber optic sensor by splicing hollow-core fiber with no-core fiber and single-mode fiber. This structure combines Mach-Zehnder and Fabry-Pérot interferometers to simultaneously measure curvature and temperature by detecting changes in the interference spectrum's power and wavelength. The sensor achieved maximum sensitivities of 64.7 pm/℃ for temperature and 27.044 dBm/m-1 for curvature, showing good repeatability and stability for potential use in areas like biomedical, material testing, and industrial monitoring
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