基于少模拉锥光纤的扭转传感器
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摘要
扭转作为重要的机械测量参数之一,在不同工业领域有着举足轻重的地位。为了及时检测出设备的扭曲异常情况,降低事故的发生率,提出了一种基于少模拉锥光纤的扭转传感结构。分析了其传感的基本原理,对其传感特性进行了实验研究。实验分析得出:少模光纤拉锥得到的微纳光纤在扭转传感方面有着明显的特性变化,其共振强度与扭转角的关系基本呈正弦函数,且在0°～90°范围内光强与扭转率呈线性变化关系,灵敏度达到2.635dB/rad·m~(-1)。基于少模拉锥光纤的扭转传感器具有结构简单、灵敏度高和易于制造的优点,因此拥有良好的应用前景。
Torsion is one of the important mechanical measurement parameters, plays a critical role in different industrial fields. In order to detecte abnormal distortion of equipment in time, the incidence of accidents is reduced. In this paper, a twist sensor structure has been proposed and demonstrated based on tapered few-mode fiber. The basic principle has been analyzed and the transmission spectral characteristics have been experimentally investigated. The experimentally confirmed that the characteristic change of the tapered few-mode fibers in torsion sensing is obvious, as the relationship between deep resonance depth and torsion angle is basically a sine function. In particular, when the twist angle ranges from 0° ～ 90°, the dip intensity changes linearly with torsion rate, having a sensitivity of 2.635 d B/rad·m~(-1). The twist sensor based on tapered few-mode fiber has potential application in many fields due to the advantages of simple structure, high sensitivity and easy fabrication.
Torsion is one of the important mechanical measurement parameters, plays a critical role in different industrial fields. In order to detecte abnormal distortion of equipment in time, the incidence of accidents is reduced. In this paper, a twist sensor structure has been proposed and demonstrated based on tapered few-mode fiber. The basic principle has been analyzed and the transmission spectral characteristics have been experimentally investigated. The experimentally confirmed that the characteristic change of the tapered few-mode fibers in torsion sensing is obvious, as the relationship between deep resonance depth and torsion angle is basically a sine function. In particular, when the twist angle ranges from 0° ～ 90°, the dip intensity changes linearly with torsion rate, having a sensitivity of 2.635 d B/rad·m~(-1). The twist sensor based on tapered few-mode fiber has potential application in many fields due to the advantages of simple structure, high sensitivity and easy fabrication.
引文
[1]YU D,MO Q,HONG Z,et al.Temperature-insensitive fiber twist sensor based on elliptical-core few-mode fiber[J].Optics Letters,2016,41(20):4617-4620.
[2]FULMEK P L,WANDLING F,ZDIARSKY W,et al.Capacitive sensor for relative angle measurement[J].IEEE Transactions on Instrumentation&Measurement,2003,51(6):1145-1149.
[3]VISCHER D,KHATIB O.Design and development of high-performance torque-controlled joints[J].IEEE Transactions on Robotics&Automation,1995,11(4):537-544.
[4]WO J,JIANG M,MALNOU M,et al.Twist sensor based on axial strain insensitive distributed Bragg reflector fiber laser[J].Optics Express,2012,20(3):2844-2850.
[5]CHEN W,LOU S,WANG L,et al.Highly Sensitive Torsion Sensor Based on Sagnac Interferometer Using Side-Leakage Photonic Crystal Fiber[J].IEEE Photonics Technology Letters,2011,23(21):1639-1641.
[6]HUANG B,SHU X.Highly sensitive twist sensor based on temperatureand strain-independent fiber Lyot filter[J].Journal of Lightwave Technology,2017,35(10):2026-2031.
[7]李恩邦.基于高阶模干涉的光纤应变传感器[J].光电子·激光,2007,18(9):1055-1057.
[8]ZHOU Q,ZHANG W,CHEN L,et al.Fiber torsion sensor based on a twist taper in polarization-maintaining fiber[J].Optics Express,2015,23(18):23877-23886.
[9]YU D,MO Q,HONG Z,et al.Temperature-insensitive fiber twist sensor based on elliptical-core few-mode fiber[J].Optics Letters,2016,41(20):4617-4620.
[10]TONG L,GATTASS R R,ASHCOM J B,et al.Subwavelength-diameter silica wires for low-loss optical wave guiding[J].Nature,2003,426(6968):816-819.
[11]高淑娟.锥形微纳光纤传输特性研究[D].杭州:浙江大学信息学院,2008.
[12]吴平辉,程波,刘燕萍,等.微纳光纤的研究进展[J].光通信技术,2012,36(10):32-34.
[13]HUANG Q,YU Y,Li X,et al.Micro-bending vector sensor based on six-air-hole grapefruit microstructure fiber using lateral offset splicing[J].Optics Express,2015,23(3):3010-3019.
[14]YIN G,WANG C,ZHAO Y,JIANG B,et al.Multi-channel mode converter based on a modal interferometer in a two-mode fiber[J].Optics Letters,2017,42(19):3757-3760.
[15]NI K,LI T,HU L,et al.Temperature-independent curvature sensor based on tapered photonic crystal fiber interferometer[J].Optics Communications,2012,285(24):5148-5150.
[16]FU X H,XIE H Y,ZHU H B,et al.Experimental Reseach of Curvature Sensor Based on Tapered Photonic crystal Fiber Mach-Zehnder Interferometer[J].Acta Optica Sinica,2015,35(5):70-75.
[17]B Ibarra-Escamilla,EA Kuzin,F Gutierrez-Zainos,et al.Measurement of beat length in short low-birefringence fibers using the fiber optical loop mirror[J].Optics Communications,2003,217(1):211-219.
[18]ZHANG W,KAI G,DONG X,et al.Temperature-independent FBG-type torsion sensor based on combinatorial torsion beam[J].IEEEPhotonics Technol.Lett.2002,14(8):1154-1156.
[2]FULMEK P L,WANDLING F,ZDIARSKY W,et al.Capacitive sensor for relative angle measurement[J].IEEE Transactions on Instrumentation&Measurement,2003,51(6):1145-1149.
[3]VISCHER D,KHATIB O.Design and development of high-performance torque-controlled joints[J].IEEE Transactions on Robotics&Automation,1995,11(4):537-544.
[4]WO J,JIANG M,MALNOU M,et al.Twist sensor based on axial strain insensitive distributed Bragg reflector fiber laser[J].Optics Express,2012,20(3):2844-2850.
[5]CHEN W,LOU S,WANG L,et al.Highly Sensitive Torsion Sensor Based on Sagnac Interferometer Using Side-Leakage Photonic Crystal Fiber[J].IEEE Photonics Technology Letters,2011,23(21):1639-1641.
[6]HUANG B,SHU X.Highly sensitive twist sensor based on temperatureand strain-independent fiber Lyot filter[J].Journal of Lightwave Technology,2017,35(10):2026-2031.
[7]李恩邦.基于高阶模干涉的光纤应变传感器[J].光电子·激光,2007,18(9):1055-1057.
[8]ZHOU Q,ZHANG W,CHEN L,et al.Fiber torsion sensor based on a twist taper in polarization-maintaining fiber[J].Optics Express,2015,23(18):23877-23886.
[9]YU D,MO Q,HONG Z,et al.Temperature-insensitive fiber twist sensor based on elliptical-core few-mode fiber[J].Optics Letters,2016,41(20):4617-4620.
[10]TONG L,GATTASS R R,ASHCOM J B,et al.Subwavelength-diameter silica wires for low-loss optical wave guiding[J].Nature,2003,426(6968):816-819.
[11]高淑娟.锥形微纳光纤传输特性研究[D].杭州:浙江大学信息学院,2008.
[12]吴平辉,程波,刘燕萍,等.微纳光纤的研究进展[J].光通信技术,2012,36(10):32-34.
[13]HUANG Q,YU Y,Li X,et al.Micro-bending vector sensor based on six-air-hole grapefruit microstructure fiber using lateral offset splicing[J].Optics Express,2015,23(3):3010-3019.
[14]YIN G,WANG C,ZHAO Y,JIANG B,et al.Multi-channel mode converter based on a modal interferometer in a two-mode fiber[J].Optics Letters,2017,42(19):3757-3760.
[15]NI K,LI T,HU L,et al.Temperature-independent curvature sensor based on tapered photonic crystal fiber interferometer[J].Optics Communications,2012,285(24):5148-5150.
[16]FU X H,XIE H Y,ZHU H B,et al.Experimental Reseach of Curvature Sensor Based on Tapered Photonic crystal Fiber Mach-Zehnder Interferometer[J].Acta Optica Sinica,2015,35(5):70-75.
[17]B Ibarra-Escamilla,EA Kuzin,F Gutierrez-Zainos,et al.Measurement of beat length in short low-birefringence fibers using the fiber optical loop mirror[J].Optics Communications,2003,217(1):211-219.
[18]ZHANG W,KAI G,DONG X,et al.Temperature-independent FBG-type torsion sensor based on combinatorial torsion beam[J].IEEEPhotonics Technol.Lett.2002,14(8):1154-1156.