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Modified frequency-shifted interferometer: encoding wavelength into phase

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Abstract

We propose a novel modified frequency-shifted interferometer, where a Mach–Zehnder interferometer is added in order to obtain wavelength information. We use the Hilbert transform to extract the wavelength information from the phase of the interference pattern and construct the relationship between phase and wavelength. The laser wavelength measurement experiment is used to verify the compound interferometer. Experimental results demonstrated that our method could obtain the wavelength from the phase, which is of great significance for demodulation of the fiber Bragg grating based on a frequency-shifted interferometer.

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DOI:10.3788/COL202018.101203

所属栏目:Optical Sensing, Measurements, and Metrology

基金项目:This work was supported by the National Natural Science Foundation of China (NSFC) (Nos. 61775173 and 61975157). The authors thank Miao Gao with the School of Mechanical Engineering in the Wuhan Vocational College of Software and Engineering for her valuable support on paper writing. The authors also thank Yuan Ma with GTL Technology & Service Co., Ltd. for his meaningful help with making the MZI and measuring ΔL.

收稿日期:2020-05-13

录用日期:2020-06-23

网络出版日期:2020-08-24

作者单位    点击查看

陈 希:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430065, China;Department of Mechanical and Electrical Engineering, College of Post and Telecommunication, Wuhan Institute of Technology, Wuhan 430073, China
周次明:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
范 典:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
钱 黎:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 3G4, Canada
庞彦东:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430065, China
魏 聪:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430065, China
赵晨光:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
梁斯靖:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
李宇潇:National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430065, China

联系人作者:范 典(fandian@whut.edu.cn)

备注:This work was supported by the National Natural Science Foundation of China (NSFC) (Nos. 61775173 and 61975157). The authors thank Miao Gao with the School of Mechanical Engineering in the Wuhan Vocational College of Software and Engineering for her valuable support on paper writing. The authors also thank Yuan Ma with GTL Technology & Service Co., Ltd. for his meaningful help with making the MZI and measuring ΔL.

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引用该论文

Xi Chen, Ciming Zhou, Dian Fan, Li Qian, Yandong Pang, Cong Wei, Chenguang Zhao, Sijing Liang, Yuxiao Li, "Modified frequency-shifted interferometer: encoding wavelength into phase," Chinese Optics Letters 18(10), 101203 (2020)

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