Study of a Direct Optically Controlled Frequency Selective Surface

In this paper, a direct optically controlled frequency selective surface (OCFSS) is proposed to eliminate negative impact of traditional electrically controlled frequency selective surfaces. By coating organic materials on silicon chips to form semiconductor heterojunctions, the photoconductive effe...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2024-02, Vol.23 (2), p.1-4
Main Authors: Du, Zonglun, Cao, Qunsheng, Zhang, Linglong, Cui, Yichun, Yang, Shunshun, Li, Huangyan, Ai, Xia, Ge, Binghua
Format: Article
Language:English
Subjects:
Chip formation
Direct optically OCFSS
Electromagnetic coupling
Electromagnetic radiation
Feed systems
Frequencies
Frequency selective surfaces
Heterojunctions
Optical control
optical feed system
Optical fibers
Optical network units
Optical switches
Organic materials
photoconductive effect
semiconductor heterojunction
Semiconductor lasers
Silicon
Switches
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Summary:In this paper, a direct optically controlled frequency selective surface (OCFSS) is proposed to eliminate negative impact of traditional electrically controlled frequency selective surfaces. By coating organic materials on silicon chips to form semiconductor heterojunctions, the photoconductive effect of the chips is effectively improved and using lasers to excite the heterojunctions into optically controlled switches. The response of optical switches to the operating frequency of incident electromagnetic waves can be increased to the Ku frequency band. At the same time, a design scheme for the direct optical feed system of OCFSS is introduced, and a prototype of OCFSS is designed, manufactured, and measured. The results show that the direct OCFSS technology can realize effective FSS function, and has fast switching speed and good state isolation, avoiding the influence of feeder and environment electromagnetic coupling on FSS.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2023.3337009