Coherent optical wireless communication link employing orbital angular momentum multiplexing in a ballistic and diffusive scattering medium

Publication Date: 1/31/2019

Event: Optics Letters

Reference: 44(3):691-694, 2019

Authors: Runzhou Zhang, University of Southern California; Long Li, University of Southern California; Zhe Zhao, University of Southern California; Guodong Xie, University of Southern California; Giovanni Milione, NEC Laboratories America, Inc.; Hao Song, University of Southern California; Peicheng Liao, University of Southern California; Cong Liu, University of Southern California; Haoqiang Song, University of Southern California; Kai Pang, University of Southern California; Ari N. Willner, University of Southern California; Brittany Lynn, Space & Naval Warfare Systems Center; Robert Bock, 4R-DEX System; Moshe Tur, Tel Aviv University; Alan E. Willner, University of Southern California

Abstract: We experimentally investigate the scattering effect on an 80 Gbit/s orbital angular momentum (OAM) multiplexed optical wireless communication link. The power loss, mode purity, cross talk, and bit error rate performance are measured and analyzed for different OAM modes under scattering levels from ballistic to diffusive regions. Results show that (i) power loss is the main impairment in the ballistic scattering, while the mode purities of different OAM modes are not significantly affected; (ii) in the diffusive scattering, however, the performance of an OAM-multiplexed link further suffers from the increased cross talk between the different OAM modes.

Publication Link: https://opg.optica.org/ol/abstract.cfm?uri=ol-44-3-691