Chinese Optics Letters, Volume. 19, Issue 4, 041202(2021)
Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings
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Fig. 3. Geometric characteristic of the TPS-LPFG. (a) Schematic diagram of the TPS-LPFG. (b) Side view of the TPS-LPFG.
Fig. 5. Torsion characteristics of TPS-LPFG. (a) Spectrum of torsion response. (b) Measured resonant wavelength shift of different applied twist rate.
Table 1. Comparison of the Torsion Sensitivity and Length between the TPS-LPFG and Other Sensors
View tableView in ArticleTable 1. Comparison of the Torsion Sensitivity and Length between the TPS-LPFG and Other Sensors
Fiber Structure Sensitivity [nm/(rad/m)] Length (mm) Reference SMF Corrugated LPFGs 0.18 20 [ 5 ]SMF LPFG written by high-frequency laser pulses 0.03 24 [ 8 ]SMF LPFG based on periodical screw-type distortions 0.16 12.6 [ 9 ]Two-mode fiber Helical LPFGs 0.05 24 [ 10 ]SMF Segmented LPFG 0.14 24.5 [ 11 ]SMF LPFG fabricated by femtosecomd laser pulses 0.11 34.2 [ 18 ]PCF Helical photonic crystal fiber 0.05 50 [ 19 ]SMF Chirp LPFG written in twisted fiber 0.21 25 [ 20 ]SMF TPS-LPFG 0.54 5.6 This work
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Senyu Wang, Yiwei Ma, Xiaoyang Li, Yang Yi, Cuiting Sun, Jingyu Lin, Chengguo Tong, Yuxiang Li, Tao Geng, Weimin Sun, Libo Yuan, "Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings," Chin. Opt. Lett. 19, 041202 (2021)
Paper Information
Category: Instrumentation, Measurement, and Optical Sensing
Received: May. 19, 2020
Accepted: Oct. 19, 2020
Published Online: Feb. 4, 2021
The Author Email: Yuxiang Li (liyuxiang11@hrbeu.edu.cn), Tao Geng (gengtao_hit_oe@126.com)
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