1. Center for Information Photonics and Communications School of Information Science and Technology Southwest Jiaotong University, and CSNMT International Cooperation Research Center of China Chengdu 611756 China
2. Institute for Photonic Integration (the former COBRA Research Institute), Electro‐Optics Communication Group Eindhoven University of Technology Eindhoven 5600 MB The Netherlands
3. Microwave Photonics Research Laboratory, School of Electrical Engineering and Computer Science University of Ottawa Ottawa K1N 6N5 Canada