1. Tianjin University of Technology, Engineering Research Center of Communication Devices Ministry of Education, School of Electronic Information Engineering, Tianjin Key Laboratory of Film Electronic and Communication Device, Tianjin 300384, China
2. Tianjin University of Technology, Engineering Research Center of Communication Devices Ministry of Education, School of Electronic Information Engineering, Tianjin Key Laboratory of Film Electronic and Communication Device, Tianjin 300384, ChinabTianjin U
3. Tianjin University, College of Precision Instruments and Optoelectronics Engineering, Ultrafast Laser Laboratory, Tianjin 300072, China