1. Department of Electronic Engineering at the School of Information Science and Technology, Jinan University, Guangzhou, China
2. State Key Lab of Optoelectric Material and Technology at the School of Electric and Information Technology, Sun Yat Sen University, Guangzhou, China
3. State Key Laboratory of Optical Fiber and Cable Manufacture Technology, Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan, China
4. FiberHome Telecommunication Technologies Company, Ltd., Wuhan, China