Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings

Senyu Wang; Yiwei Ma; Xiaoyang Li; Yang Yi; Cuiting Sun; Jingyu Lin; Chengguo Tong; Yuxiang Li; Tao Geng; Weimin Sun; Libo Yuan

doi:doi:10.3788/COL202119.041202

Chinese Optics Letters, 2021, 19 (4): 041202, Published Online: Feb. 4, 2021

Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings Download： 678次

Senyu Wang ¹Yiwei Ma ¹Xiaoyang Li ¹Yang Yi ¹Cuiting Sun ¹Jingyu Lin ¹Chengguo Tong ²Yuxiang Li ^1,*Tao Geng ^1,**Weimin Sun ¹Libo Yuan ²

Author Affiliations

¹ College of Science, Harbin Engineering University, Harbin 150001, China

² Photonics Research Center, Guilin University of Electronics Technology, Guilin 541004, China

Figures & Tables

Fig. 1. Diagram of the TPS-LPFG fabricating system.

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Fig. 2. Original transmission spectrum of the TPS-LPFG.

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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.

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Fig. 4. Devices for torsion and temperature measurement.

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Fig. 5. Torsion characteristics of TPS-LPFG. (a) Spectrum of torsion response. (b) Measured resonant wavelength shift of different applied twist rate.

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Fig. 6. Temperature characteristics of TPS-LPFG.

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Table1. 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 ${CO}_{2}$ 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[J]. Chinese Optics Letters, 2021, 19(4): 041202.

Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings Download： 678次

Fig. 1. Diagram of the TPS-LPFG fabricating system.

Fig. 2. Original transmission spectrum of the TPS-LPFG.

Fig. 3. Geometric characteristic of the TPS-LPFG. (a) Schematic diagram of the TPS-LPFG. (b) Side view of the TPS-LPFG.

Fig. 4. Devices for torsion and temperature measurement.

Fig. 5. Torsion characteristics of TPS-LPFG. (a) Spectrum of torsion response. (b) Measured resonant wavelength shift of different applied twist rate.

Fig. 6. Temperature characteristics of TPS-LPFG.

Table1. Comparison of the Torsion Sensitivity and Length between the TPS-LPFG and Other Sensors

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Highly sensitive torsion sensor based on triangular-prism-shaped long-period fiber gratings Download： 678次

Fig. 1. Diagram of the TPS-LPFG fabricating system.

Fig. 2. Original transmission spectrum of the TPS-LPFG.

Fig. 3. Geometric characteristic of the TPS-LPFG. (a) Schematic diagram of the TPS-LPFG. (b) Side view of the TPS-LPFG.

Fig. 4. Devices for torsion and temperature measurement.

Fig. 5. Torsion characteristics of TPS-LPFG. (a) Spectrum of torsion response. (b) Measured resonant wavelength shift of different applied twist rate.

Fig. 6. Temperature characteristics of TPS-LPFG.

Table1. Comparison of the Torsion Sensitivity and Length between the TPS-LPFG and Other Sensors

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