1. Advanced Fiber Devices and Systems Group, Key Laboratory of Micro and Nano Photonic Structures (MoE), Key Laboratory for Information Science of Electromagnetic Waves (MoE), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, School of Information Science and Technology, Fudan University, Shanghai 200000, China
2. Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
3. Zhongtian Technology Advanced Materials Co., Ltd., Nantong 226000, Jiangsu, China