Author Affiliations

Qian Li,¹ Chi Zhang,² Kim K. Y. Cheung,² Yi Qiu,² Kevin K. Tsia,² Kenneth K. Y. Wong,² Feng Li,¹ Alan Pak Tao Lau,¹ and P. K. A. Wai^1,*

¹Photonics Research Centre, Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong

²Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong

^*Corresponding author: enwai@polyu.edu.hk