Daoyou Guo1,2, Han Liu1, Peigang Li1,2, Zhenping Wu2, Shunli Wang1, Can Cui1, Chaorong Li1, Weihua Tang1,2
1Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China
2State Key Laboratory of Information Photonics and Optical Communications & Laboratory of Optoelectronics Materials and Devices, School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China