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Merging bands of polarization convertors by suppressing Fano resonance

In this letter, we propose to extend the bandwidth of polarization conversion (PC) by merging the bands of different polarization converters. Intuitively, it is quite natural that the bands of two polarization converters be merged if they are close enough. Unfortunately, there is always a narrow ban... Full description

Journal Title: Applied Physics Letters Sep 3, 2018, Vol.113(10)
Main Author: Wang, Jiafu
Other Authors: Fan, Ya , Mingbao, Yan , Li, Yongfeng , Chen, Hongya
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0003-6951
Link: http://search.proquest.com/docview/2099196095/?pq-origsite=primo
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title: Merging bands of polarization convertors by suppressing Fano resonance
format: Article
creator:
  • Wang, Jiafu
  • Fan, Ya
  • Mingbao, Yan
  • Li, Yongfeng
  • Chen, Hongya
subjects:
  • Ultrawideband
  • Broadband
  • Band Theory
  • Polarization
  • Converters
  • Merging
  • Computer Simulation
  • Resonant Frequencies
ispartof: Applied Physics Letters, Sep 3, 2018, Vol.113(10)
description: In this letter, we propose to extend the bandwidth of polarization conversion (PC) by merging the bands of different polarization converters. Intuitively, it is quite natural that the bands of two polarization converters be merged if they are close enough. Unfortunately, there is always a narrow band with low efficiency between the two bands, which results from Fano resonance. We establish a theoretical model to analyze the underlying mechanism of the Fano resonance. We find that the Fano resonance can be suppressed by reducing the resonant frequency of the converter operating at a higher frequency band. In this way, the anti-symmetric surface current can be eliminated and the two PC bands can be merged as a wide band. We designed, fabricated, and measured a prototype. Both the simulation and experimental results verify this method. This work provides an effective alternative to the design of wide-band or even ultra-wideband polarization converters.
language: eng
source:
identifier: ISSN: 0003-6951
fulltext: fulltext
issn:
  • 00036951
  • 0003-6951
url: Link


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identifierISSN: 0003-6951
subjectUltrawideband ; Broadband ; Band Theory ; Polarization ; Converters ; Merging ; Computer Simulation ; Resonant Frequencies
descriptionIn this letter, we propose to extend the bandwidth of polarization conversion (PC) by merging the bands of different polarization converters. Intuitively, it is quite natural that the bands of two polarization converters be merged if they are close enough. Unfortunately, there is always a narrow band with low efficiency between the two bands, which results from Fano resonance. We establish a theoretical model to analyze the underlying mechanism of the Fano resonance. We find that the Fano resonance can be suppressed by reducing the resonant frequency of the converter operating at a higher frequency band. In this way, the anti-symmetric surface current can be eliminated and the two PC bands can be merged as a wide band. We designed, fabricated, and measured a prototype. Both the simulation and experimental results verify this method. This work provides an effective alternative to the design of wide-band or even ultra-wideband polarization converters.
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abstractIn this letter, we propose to extend the bandwidth of polarization conversion (PC) by merging the bands of different polarization converters. Intuitively, it is quite natural that the bands of two polarization converters be merged if they are close enough. Unfortunately, there is always a narrow band with low efficiency between the two bands, which results from Fano resonance. We establish a theoretical model to analyze the underlying mechanism of the Fano resonance. We find that the Fano resonance can be suppressed by reducing the resonant frequency of the converter operating at a higher frequency band. In this way, the anti-symmetric surface current can be eliminated and the two PC bands can be merged as a wide band. We designed, fabricated, and measured a prototype. Both the simulation and experimental results verify this method. This work provides an effective alternative to the design of wide-band or even ultra-wideband polarization converters.
copMelville
pubAmerican Institute of Physics
urlhttp://search.proquest.com/docview/2099196095/
doi10.1063/1.5048247
eissn10773118
date2018-09-03