1. State Key Laboratory of Luminescent Materials and Devices, and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
2. Department of Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong
3. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
4. State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China