摘要
本实验基于模间干涉原理制作了由熊猫型保偏光纤(Panda polarization maintaining fiber,PMF)构成的马赫-曾德尔干涉仪(Mach-Zehnder interferometer,MZI)传感器。该传感器由于大孔径多模光纤(large aperture multimode fiber,MMF)的耦合作用,对温度表现出很高的灵敏性。当外界物理量温度变化时,传感器透射谱发生漂移,通过观察特征峰的漂移与温度变化的关系,得到传感器温度响应特性。实验数据显示,该单模-多模-熊猫-单模光纤干涉仪结构的两个特征峰波长对温度线性响应,且灵敏度为-123.80 pm/℃和-195.20 pm/℃。该传感器温度实验的重复性和稳定性效果均很好,能实现对温度的有效测量。
Based on the principle of inter-mode interference,a Mach-Zehnder interferometer(MZI)sensor composed of Panda polarization maintaining fiber(PMF)is fabricated in this experiment.Because of the coupling of the large aperture multimode fiber(MMF),the sensor shows high sensitivity to temperature.When the external temperature changing,the transmission spectrum of the sensor shifts.By observing the wavelength shift of characteristic peaks,the temperature response characteristics of the sensor is obtained.From the experimental data,the wavelength of two characteristic peaks of the SMF-MMF-PMF-SMF interferometer structure linearly responses to temperature.The sensitivity of temperature is-123.80 pm/℃and-195.20 pm/℃,respectively.The repeatability and stability of this sensor for temperature measuring are very good,and this sensor can effectively measure the ambient temperature.
作者
任杰
孙四梅
宋娇
陈海林
陈宁
鲁志琪
REN Jie;SUN Simei;SONG Jiao;CHEN Hailin;CHEN Ning;LU Zhiqi(College of Physics and Electronic Science,Hubei Normal University,Huangshi,Hubei 435002,China)
出处
《光电子．激光》
CAS
CSCD
北大核心
2022年第9期920-924,共5页
Journal of Optoelectronics·Laser
基金
2020年度湖北省教育厅科学研究计划指导性项目(B2020136)资助项目
