Optical generation/detection of broadband microwave orbital angular momentum modes

Jianou Huang, Zizheng Cao (Corresponding author), Xinran Zhao, Xuebing Zhang, Yu Liu, Yuanjiang Xiang, Giampiero Gerini, A.M.J. (Ton) Koonen

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

In this article, a novel electrically controlled optical broadband phase shifter (ECO-BPS) is proposed and experimentally investigated for broadband microwave orbital angular momentum (OAM) mode generation. Based on the proposed ECO-BPS and a 17-element circular antenna array, the effect of the phase error on the OAM mode quality is studied by comparing the OAM modes respectively synthesized by three phase schemes: ideal phase shifts, ECO-BPS phase shifts, and optical true time delay phase shifts. In addition, the crosstalk caused by the phase error in applications of OAM modes multiplexing is investigated in a Dammann vortex grating based OAM modes demultiplexing system. All numerical simulation results demonstrate the feasibility of the ECO-BPS in broadband microwave OAM applications.

Original languageEnglish
Article number8902121
Pages (from-to)1202-1209
Number of pages8
JournalJournal of Lightwave Technology
Volume38
Issue number6
DOIs
Publication statusPublished - 15 Mar 2020

Keywords

  • Circular antenna array
  • Dammann vortex grating
  • electrically-controlled optical broadband phase shifter
  • orbital angular momentum

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