1. State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
2. Department of Optoelectronic Information Science and Engineering, College of Science, Jiangsu University of Science and Technology, Zhenjiang 212003, People’s Republic of China
3. State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Haidian, Beijing 100084, China