Optical Generation/Detection of Broadband Microwave Orbital Angular Momentum Modes
article
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.
Topics
TNO Identifier
875544
ISSN
07338724
Source
Journal of Lightwave Technology, 38(6), pp. 1202-1209.
Publisher
Institute of Electrical and Electronics Engineers IEEE
Article nr.
8902121
Collation
8 p.
Pages
1202-1209
Files
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