同时测量温度和应变的全单模光纤马赫-曾德尔干涉仪
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摘要
为了实现低成本的温度和应变同时测量,利用光纤熔接机的熔融放电原理制备了基于全单模光纤(SMF)的花生和J型结构级联的马赫-曾德尔干涉仪(CPJS-MZI)。首先利用光纤熔接机的球形程序将两段单模光纤的端面熔成球形,再将小球熔接到一起形成花生型结构;然后在距离花生结构15mm处,将两根单模光纤端面错位一定距离,对其进行熔接形成J型结构;最后对所制备的器件进行温度和应变传感性能的测试。实验发现,CPJS-MZI单个干涉峰强度和波长对应的温度灵敏度分别为-0.012 5dB/℃和52.9pm/℃,应变灵敏度分别为0.015 2dB/με和-11.44pm/με。结果表明,基于SMF的CPJS-MZI可利用单峰实现温度和应变的同时测量,且具有尺寸小、制备容易、成本低等优点,在同时测量温度和应变传感领域具有潜在应用价值。
In order to achieve low-cost measurement of temperature and strain simultaneously,a fiber Mach-Zehnder interferometer with cascaded peanut and J-shape structures(CPJS-MZI)based on all single-mode optical fiber(SMF)was prepared by using the discharge of an optical fiber fusion splicer.Firstly,the spherical program of the optical fiber fusion splicer was used to fuse the ends of two sections of SMF into spheres separately,and then the spheres were fused together to form a peanut structure;then at a distance of 15 mm from the peanut structure,the ends of two sections of SMF were deviated the large lateral offset and fused into a J-shape.Finally,the temperature and strain sensing characteristics of the prepared device were discussed.Experiments show that the temperature sensitivity corresponding to intensity and wavelength of the CPJS-MZI single interference peak is-0.012 5 dB/℃and 52.9 pm/℃,respectively,and the strain sensitivity is 0.015 2 dB/μεand-11.44 pm/με,respectively.The results show that the CPJS-MZI based on SMF can use a single peak to achieve simultaneous measurement of temperature and strain,and it has the advantages of small size,easy preparation,low cost and etc.,thus showing great potential in the sensing field of simultaneous measurement of temperature and strain.
In order to achieve low-cost measurement of temperature and strain simultaneously,a fiber Mach-Zehnder interferometer with cascaded peanut and J-shape structures(CPJS-MZI)based on all single-mode optical fiber(SMF)was prepared by using the discharge of an optical fiber fusion splicer.Firstly,the spherical program of the optical fiber fusion splicer was used to fuse the ends of two sections of SMF into spheres separately,and then the spheres were fused together to form a peanut structure;then at a distance of 15 mm from the peanut structure,the ends of two sections of SMF were deviated the large lateral offset and fused into a J-shape.Finally,the temperature and strain sensing characteristics of the prepared device were discussed.Experiments show that the temperature sensitivity corresponding to intensity and wavelength of the CPJS-MZI single interference peak is-0.012 5 dB/℃and 52.9 pm/℃,respectively,and the strain sensitivity is 0.015 2 dB/μεand-11.44 pm/με,respectively.The results show that the CPJS-MZI based on SMF can use a single peak to achieve simultaneous measurement of temperature and strain,and it has the advantages of small size,easy preparation,low cost and etc.,thus showing great potential in the sensing field of simultaneous measurement of temperature and strain.
引文
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[14]Zeng Hongyi,Geng Tao,Yang Wenlei,et al.Combining two types of gratings for simultaneous strain and temperature measurement[J].IEEE Photon.Technol.Lett.,2016,28(4):477-480.
[15]Geng Tao,He Jiang,Yang Wenlei,et al.Modal interferometer using three-core fiber for simultaneous measurement strain and temperature[J].IEEE Photon.J.,2016,8(4):1-8.
[2]Mihailov S J.Fiber Bragg grating sensors for harsh environments[J].Sensors,2012,12(2):1898-1918.
[3]徐国权,熊代余.光纤光栅传感技术在工程中的应用[J].中国光学,2013,9(3):306-317.Xu Guoquan,Xiong Daiyu.Application of fiber Bragg grating sensing technology in engineering[J].Chinese Opt.,2013,9(3):306-317.
[4]Sun Yuan,Liu Deming,Lu Ping,et al.Dual-parameters optical fiber sensor with enhanced resolution using twisted MMF based on SMS structure[J].IEEE Sensors J.,2017,17(10):3045-3051.
[5]Sun Hao,Yang Shen,Zhang Xiaolei,et al.Simultaneous measurement of temperature and strain or temperature and curvature based on an optical fiber Mach-Zehnder interferometer[J].Opt.Commun.,2015,340:39-43.
[6]Zhou Dapeng,Wei Li,Liu Wingki,et al.Simultaneous strain and temperature measurement with fiber Bragg grating and multimode fibers using an intensity-based interrogation method[J].IEEE Photon.Technol.Lett.,2009,21(7):468-470.
[7]孟爱华,崔丁元,张轩宇,等.双折射光纤布拉格光栅的飞秒激光制备与传感性能[J].激光与光电子学进展,2017(6):182-188.Meng Aihua,Cui Dingyuan,Zhang Xuanyu,et al.Femtosecond laser fabrication and sensing performance of birefringence fiber Bragg gratings[J].Laser&Optoelectron.Progress,2017(6):182-188.
[8]Tian Ye,Chai Quan,Meng Yichen,et al.An overlapsplicing-based cavity in FBG sensor for the measurement of strain and temperature[J].IEEE Photon.Technol.Lett.,2017,29(2):235-238.
[9]Wang Yaxin,Bao Haihong,Ran Zengling,et al.Integrated FP/RFBG sensor with a micro-channel for dual-parameter measurement under high temperature[J].Appl.Opt.,2017,56(15):4250-4254.
[10]Liu Qin,Ran Zengling,Rao Yunjiang,et al.Highly integrated FP/FBG sensor for simultaneous measurement of high temperature and strain[J].IEEE Photon.Technol.Lett.,2014,26(17):1715-1717.
[11]Alemohammad H R,Foroozmehr E,Cotton B S,et al.Adual-parameter optical fiber sensor for concurrent strain and temperature measurement:design,fabrication,packaging,and calibration[J].IEEE J.of Lightwave Technol.,2013,31(8):1198-1204.
[12]Zhu Mengshi,Murayama H,Wada D,et al.Dependence of measurement accuracy on the birefringence of panda fiber Bragg gratings in distributed simultaneous strain and temperature sensing[J].Opt.Express,2017,25(4):4000-4017.
[13]Chen Jiageng,Liu Qingwen,He Zuyuan.High-resolution simultaneous measurement of strain and temperature usingπ-phase-shifted FBG in polarization maintaining fiber[J].IEEEJ.of Lightwave Technol.,2017,35(22):4838-4844.
[14]Zeng Hongyi,Geng Tao,Yang Wenlei,et al.Combining two types of gratings for simultaneous strain and temperature measurement[J].IEEE Photon.Technol.Lett.,2016,28(4):477-480.
[15]Geng Tao,He Jiang,Yang Wenlei,et al.Modal interferometer using three-core fiber for simultaneous measurement strain and temperature[J].IEEE Photon.J.,2016,8(4):1-8.