A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures
With the continuous advancement of optical fiber micromachining technology, C-type optical fibers have demonstrated significant potential in the field of optical fiber sensing. By partially or completely removing specific regions of the cladding, a “leakage window” is created, enabling interaction b...
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MDPI AG
2025-07-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/7/695 |
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| author | Zhijun Gao Zhenbo Li Yu Ying |
| author_facet | Zhijun Gao Zhenbo Li Yu Ying |
| author_sort | Zhijun Gao |
| collection | DOAJ |
| description | With the continuous advancement of optical fiber micromachining technology, C-type optical fibers have demonstrated significant potential in the field of optical fiber sensing. By partially or completely removing specific regions of the cladding, a “leakage window” is created, enabling interaction between the optical field and external substances. This structure has facilitated the development of various sensors. This paper reviews recent progress in the research and applications of C-type optical fibers in optical sensing. Based on sensing principles and application scenarios, C-type optical fiber sensors can be categorized into two main types: interferometric and photonic crystal types. This article discusses the fundamental operating principles and structural characteristics of each type, and provides a detailed comparison of their respective advantages and disadvantages. Studies have shown that sensors based on C-type fiber structures offer notable benefits such as simple fabrication, excellent mechanical performance, strong anti-interference capability, and high sensitivity. Therefore, they hold great promise for applications in intelligent monitoring, environmental detection, and healthcare. Finally, this review outlines future research directions for C-type fiber sensors. As technology continues to evolve, future studies are expected to focus on improving sensor stability, expanding application scenarios, and addressing challenges in current fabrication techniques. |
| format | Article |
| id | doaj-art-970da308f9574e21bddfb2d74e05fb39 |
| institution | Kabale University |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-970da308f9574e21bddfb2d74e05fb392025-08-20T03:32:33ZengMDPI AGPhotonics2304-67322025-07-0112769510.3390/photonics12070695A Review of the Research Progress on Optical Fiber Sensors Based on C-Type StructuresZhijun Gao0Zhenbo Li1Yu Ying2College of Electrical & Control Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaCollege of Electrical & Control Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaCollege of Electrical & Control Engineering, Shenyang Jianzhu University, Shenyang 110168, ChinaWith the continuous advancement of optical fiber micromachining technology, C-type optical fibers have demonstrated significant potential in the field of optical fiber sensing. By partially or completely removing specific regions of the cladding, a “leakage window” is created, enabling interaction between the optical field and external substances. This structure has facilitated the development of various sensors. This paper reviews recent progress in the research and applications of C-type optical fibers in optical sensing. Based on sensing principles and application scenarios, C-type optical fiber sensors can be categorized into two main types: interferometric and photonic crystal types. This article discusses the fundamental operating principles and structural characteristics of each type, and provides a detailed comparison of their respective advantages and disadvantages. Studies have shown that sensors based on C-type fiber structures offer notable benefits such as simple fabrication, excellent mechanical performance, strong anti-interference capability, and high sensitivity. Therefore, they hold great promise for applications in intelligent monitoring, environmental detection, and healthcare. Finally, this review outlines future research directions for C-type fiber sensors. As technology continues to evolve, future studies are expected to focus on improving sensor stability, expanding application scenarios, and addressing challenges in current fabrication techniques.https://www.mdpi.com/2304-6732/12/7/695C-type optical fiberoptical fiber sensoroptical fiber interferometerphotonic crystal fiber |
| spellingShingle | Zhijun Gao Zhenbo Li Yu Ying A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures Photonics C-type optical fiber optical fiber sensor optical fiber interferometer photonic crystal fiber |
| title | A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures |
| title_full | A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures |
| title_fullStr | A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures |
| title_full_unstemmed | A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures |
| title_short | A Review of the Research Progress on Optical Fiber Sensors Based on C-Type Structures |
| title_sort | review of the research progress on optical fiber sensors based on c type structures |
| topic | C-type optical fiber optical fiber sensor optical fiber interferometer photonic crystal fiber |
| url | https://www.mdpi.com/2304-6732/12/7/695 |
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