State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China

Institut d'Electronique Fondamentale, Universite Paris-Sud, CNRS UMR 8622, Bat. 220, 91405 Orsay Cedex, France

State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

¹ School of Opto-Electronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, China

² School of Mathematics and Physics, Chongqing University of Technology, Chongqing 400050, China

Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

Department of Communication Science and Engineering, State Key Laboratory of Application Specific Integrated Circuit (ASIC) and System, Fudan University, Shanghai 200433, China

State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China

¹ School of Physics, Southwest University, Chongqing 400715, China

² State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China

Tsinghua National Laboratory for Information and Science Technology/State Key Laboratory on Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

Laboratory of All Optical Network and Advanced Telecommunication Network, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China

Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Key Lab of Broadband Optical Fiber Transmission and Communication Networks of the Ministry of Education, University of Electronic Science and Technology of China, Chengdu 611731, China

Wuhan National Laboratory for Optoelectronics, College of Optoelectonic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China