1. Key Laboratory of In-Fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin, China
2. College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin, China
3. Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao, China
4. Photonics Research Center, Guilin University of Electronic Technology, Guilin, China