1. Key Laboratory of In-Fiber Integrated Optics, Ministry of Education of China, and the College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, China
2. Research Center for Space Optical Engineering and the School of Astronautics, Harbin Institute of Technology, Harbin, China
3. Advanced Institute of Photonic Technology, the School of Information Engineering, and the Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou, China