Open Access2D optical wireless broadcasting system enabled by a liquid crystal on silicon and rotated-splitting-SLM algorithm
Author(s) -
Quan You,
Ming Luo,
Xi Xiao,
Shaohua Yu
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.405948
Subject(s) - liquid crystal on silicon , optics , materials science , computer science , silicon , path loss , optical path , broadcasting (networking) , wireless , electronic engineering , liquid crystal , optoelectronics , telecommunications , physics , engineering , computer network
In this paper, a 2D optical wireless broadcasting system with low path loss is proposed and experimentally demonstrated based on a commercial liquid crystal on silicon (LCoS) device and rotated-splitting-SLM algorithm. The low path loss is realized by our designed pair of fiber collimators with large beam waist, which can significantly reduce the coupling loss. By using the proposed system and algorithm, a 60-Gb/s PAM-4 signal is successfully broadcasted over 2-km standard single mode fiber and 14 m free space link with 16 dB path loss for up to four mobile users. The experimental results reveal that the LCoS based on the proposed rotated-splitting-SLM method can be used for multi-user broadcasting in the high-speed in-building dynamic networks.