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Volume 21
Issue 20
10.3390/s21206782
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Communication

Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication

by
Duo Yi
1,
Lina Wang
1,
Youfu Geng
1,*,
Yu Du
1,
Xuejin Li
2 and
Xueming Hong
1
1
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518061, China
2
School of Science and Engineering, Chinese University of Hong Kong, Shenzhen 518172, China
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(20), 6782; https://doi.org/10.3390/s21206782
Submission received: 15 September 2021 / Revised: 9 October 2021 / Accepted: 11 October 2021 / Published: 13 October 2021
(This article belongs to the Special Issue Micro-/Nano-Fiber Sensors and Optical Integration Devices)
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Abstract

This study proposes a multiplexed weak waist-enlarged fiber taper (WWFT) curvature sensor and its rapid fabrication method. Compared with other types of fiber taper, the proposed WWFT has no difference in appearance with the single mode fiber and has ultralow insertion loss. The fabrication of WWFT also does not need the repeated cleaving and splicing process, and thereby could be rapidly embedded into the inline sensing fiber without splicing point, which greatly enhances the sensor solidity. Owing to the ultralow insertion loss (as low as 0.15 dB), the WWFT-based interferometer is further used for multiplexed curvature sensing. The results show that the different curvatures can be individually detected by the multiplexed interferometers. Furthermore, it also shows that diverse responses for the curvature changes exist in two orthogonal directions, and the corresponding sensitivities are determined to be 79.1°/m−1 and –48.0°/m−1 respectively. This feature can be potentially applied for vector curvature sensing.
Keywords: curvature sensor; fiber interferometer; waist-enlarged fiber taper curvature sensor; fiber interferometer; waist-enlarged fiber taper

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MDPI and ACS Style

Yi, D.; Wang, L.; Geng, Y.; Du, Y.; Li, X.; Hong, X. Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication. Sensors 2021, 21, 6782. https://doi.org/10.3390/s21206782

AMA Style

Yi D, Wang L, Geng Y, Du Y, Li X, Hong X. Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication. Sensors. 2021; 21(20):6782. https://doi.org/10.3390/s21206782

Chicago/Turabian Style

Yi, Duo, Lina Wang, Youfu Geng, Yu Du, Xuejin Li, and Xueming Hong. 2021. "Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication" Sensors 21, no. 20: 6782. https://doi.org/10.3390/s21206782

APA Style

Yi, D., Wang, L., Geng, Y., Du, Y., Li, X., & Hong, X. (2021). Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication. Sensors, 21(20), 6782. https://doi.org/10.3390/s21206782

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