1College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2College of Physics, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
3Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
4School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
5Key Laboratory of Opto-Electronics Information Technology (Tianjin University), Ministry of Education, Tianjin University, Tianjin 300072, China
6Institute of Optical Fiber Sensing of Tianjin University, Tianjin 300072, China
7Tianjin Optical Fiber Sensing Engineering Center, Tianjin 300072, China