1. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, China
2. AVIC Taiyuan Aero-Instruments Company Ltd., Taiyuan, China
3. Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education,1 College of Architecture, Taiyuan University of Technology, Taiyuan, China
4. College of Physics and Optoelectronics and the Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan, China