Author Affiliations

Liang Wang,^1,2,* Nan Guo,^1,2 Kangping Zhong,^1,2 Xian Zhou,^1,2,4 Chao Jin,^1,2 Chao Lu,^1,2 and Hwa-Yaw Tam^1,3

¹Photonics Research Centre, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.

²Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.

³Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.

⁴Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing (USTB), No.30 Xue Yuan Road, Haidian, Beijing, 100083, China.

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