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Materials 2019, 12(8), 1263; https://doi.org/10.3390/ma12081263

On-line Writing of Fiber Bragg Grating Array on a Two-mode Optical Fiber for Sensing Applications

1
National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
2
Wuhan WUTOS Co., Ltd., Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Received: 22 March 2019 / Revised: 12 April 2019 / Accepted: 16 April 2019 / Published: 17 April 2019
(This article belongs to the Special Issue Novel Optical Fibers, Devices and Applications)
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Abstract

On-line fabricated fiber Bragg grating (FBG) array and its sensing potentials have attracted plenty of attention in recent years. In this paper, FBG arrays are written on-line on a two-mode fiber, and this two-mode fiber Bragg grating (TM-FBG) is further experimentally investigated for temperature and curvature sensing. The responses of this sensor were characterized by 11.2 pm/°C and −0.21 dB/m−1 for temperature and curvature, respectively. Based on the measurements, a dual-parameter fiber sensing system was developed, which can realize the quasi-distributed, simultaneous detection of temperature and curvature, making it suitable for structural health monitoring or perimeter security. View Full-Text
Keywords: two-mode fiber; fiber Bragg grating; on-line grating writing; temperature sensing; curvature sensing two-mode fiber; fiber Bragg grating; on-line grating writing; temperature sensing; curvature sensing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Yu, H.; Gao, W.; Jiang, X.; Guo, H.; Jiang, S.; Zheng, Y. On-line Writing of Fiber Bragg Grating Array on a Two-mode Optical Fiber for Sensing Applications. Materials 2019, 12, 1263.

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