An ultra-wideband plasmonic reflector based on local resonant bandgap and Bragg bandgap

• Autorzy: Chen San , Fang Liang , Liu Jianqiang , Wu Shan

Identyfikatory

DOI

10.37190/oa240207

• Języki publikacji: EN

Abstrakty

EN

Unlike previous reports that utilized periodic modulation of insulation layer thickness or dielectrics, we propose the use of split ring resonators (SRRs) and their arrays to modulate the propagation characteristics of MIM plasmon waveguides. Due to the strong resonance backscattering of SRR, resonance transmission valleys appear in the transmission spectra of MIM waveguides. Changing the size of SRR can achieve continuously adjustable positions of resonance transmission valleys. The introduction of SRRs periodic arrays will result in two bands (bandgaps) with transmission minimum in the transmission spectra. Combining the dependence of the two bandgaps on the array period and the field distribution, the two bandgaps are Bragg bandgaps and local resonance bandgaps, respectively. By modulating the local resonance bandgap, the Bragg bandgap can be tuned. The introduction of local bandgap increases the degree of freedom to modulate the transmission characteristics of MIM waveguides. Combining local resonant bandgap and Bragg bandgap can significantly increase the reflection bandwidth, achieve broadband filtering, and facilitate the miniaturization of waveguide devices.

Słowa kluczowe

EN

metal-insulator-metal waveguides; SRRs; split ring resonators; Bragg bandgap; local resonant bandgap

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2024
• Tom: Vol. 54, nr 2
• Strony: 205--216
• Opis fizyczny: Bibliogr. 41 poz., rys.

Twórcy

autor

Chen San

• School of Physics and Electronic Information, and Anhui Province Key Laboratory of Intelligent Computing and Applications, Huaibei Normal University, Huaibei 235000, China

autor

Fang Liang

• School of Physics and Electronic Information, and Anhui Province Key Laboratory of Intelligent Computing and Applications, Huaibei Normal University, Huaibei 235000, China

autor

Liu Jianqiang

• College of Science, Jiujiang University, Jiujiang, 332005, China

autor

Wu Shan

• Key Laboratory of Functional Materials and Devices for Informatics of Anhui Higher Education Institutes, Fuyang Normal University, Fuyang 236037, China

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