Generation of coupled radio frequency orbital angular momentum beam with an optical-controlled circular antenna array

OPTICS COMMUNICATIONS

卷:426

Article

Zhao, Mingyang¹  Gao, Xinlu¹  Xie, Mutong¹  Qian, Jinwang¹  Song, Chunqi¹  Huang, Shanguo¹ 

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

关键词: Orbital angular momentum;    Radio frequency photonics;    Optical wireless communications;    Mode division multiplexing;   

DOI  :  10.1016/j.optcom.2018.05.028

来源: Elsevier

【 摘 要 】

A circular antenna array (CAA) principle for generating radio frequency orbital angular momentum (RF-OAM) beams with dual-opposite-states is proposed in an optical-controlled system. At this condition, the pre-existing restrictions of antenna amount for CAA system is extended. It is worth noting that the simulative beam patterns show almost no distortion in this superposition states case. In the following control experiment, transmission characteristics, including Error Vector Magnitude (EVM), Signal to Noise Ratio (SNR) and receiving power, are all improved significantly in each proposed coupled OAM channel, compared to ones in single-state OAM beam. The EVM can be decreased from 4.82% to 4.59% in average, and the receiving power is increased by 2.7 dB at the same transmission condition, which indicates effective propagation distance can be increased.

【 授权许可】

Free