Theoretical Description of Dynamic Transmission Characteristics in MDM Waveguide Aperture-Side-Coupled with Ring Cavity

Yan, Dongpeng; Cao, Guangtao; Wu, Yunwen; Zhou, Xiaoqing; Liao, Wenhu

doi:10.1007/s11468-015-9971-9

Cited by 122 publications

(57 citation statements)

References 40 publications

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“…Temporal coupled-mode theory (CMT) is used to analyze the transmission characteristics [25,31]. For the studied waveguide-resonator coupled system, the coupling coefficients between ring resonator and input (output) waveguide are denoted by κ 1 (κ 2 ).…”

Section: Structure and Theorymentioning

confidence: 99%

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

Ren

Ren²,

Zhang³

et al. 2019

Beilstein J. Nanotechnol.

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A symmetry-breaking nanostructure is proposed to achieve multiple Fano resonances. The nanostructure consists of an asymmetric ring resonator coupled to a plasmonic waveguide. The broken symmetry is introduced by deviating the centers of regular ring. New resonant modes that are not accessible through a regular symmetric ring cavity are excited. Thus, one asymmetric cavity can provide more than one resonant mode with the same mode order. As a result, the interval of Fano resonances is greatly reduced. By combining different rings with different degrees of asymmetry, multiple Fano resonances are generated. Those Fano resonances have different dependences on structural parameters due to their different physical origin. The resonance frequency and resonance peak number can be arbitrarily adjusted by changing the degree of asymmetry. This research may provide new opportunities to design on-chip optical devices with great tuning performance.

show abstract

Section: Structure and Theorymentioning

confidence: 99%

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

Ren

Ren²,

Zhang³

et al. 2019

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…The ring resonator is filled with dielectric (εd). Temporal coupled mode theory (CMT) is used to analyze the transmission characteristics [30,31]. For the studied waveguide-resonator coupled system, the coupling coefficients between ring resonator and input (output) waveguide are denoted by κ1 (κ2).…”

Section: Structure and Theorymentioning

confidence: 99%

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

Ren¹,

Ren²,

Zhang³

et al. 2019

Preprint

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A symmetry-breaking nanostructure is proposed to achieve multiple Fano resonances. The nanostructure consists of an asymmetric ring resonator coupled to a plasmonic waveguide. The broken symmetry is introduced by deviating the centers of regular ring. New resonant modes those are not accessible to regular symmetric ring cavity are excited. Thus one asymmetric cavity can provide more than one resonant mode with the same mode order. As a result, the interval of Fano resonances is greatly reduced. By combining different rings with different asymmetric, multiple Fano resonances are generated. Those Fano resonances have different dependence on structural parameters due to their different physical origin. The resonance frequency and resonance peak number can be arbitrarily adjusted by changing the degree of asymmetry. This research may provide new opportunities to design on-chip optical devices with great tuning performance.

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“…This defect greatly limits the possibilities for dynamic adjustment of absorber performance. Although there are some technologies that can achieve dynamic frequency adjustment, such as laser power illumination, fluid filling, and temperature change, most of these physical adjustment methods are complicated, and the efficiency of adjustment is not enough for the practical use of equipment [30][31][32][33][34]. Therefore, realizing a tunable perfect absorber has become a new hot spot in current research, and it is also an inevitable trend in its practical application.…”

Section: Introductionmentioning

confidence: 99%

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

Luo

Shangguan

et al. 2021

Coatings

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In this paper, we design and present a graphene-based “ancient coin”-type dual-band perfect metamaterial absorber, which is composed of a silver layer, silicon dioxide layer, and a top “ancient coin” graphene layer. The absorption performance of the absorber is affected by the hollowed-out square in the center of the graphene layer and geometric parameters of the remaining nano disk. The optical properties of graphene can be changed by adjusting the voltage, to control the absorption performance of the absorber dynamically. In addition, the centrally symmetric pattern structure greatly eliminates the polarization angle dependence of our proposed absorber, and it exhibits good angular polarization tolerance. Furthermore, the proposed “ancient coin”-type absorber shows great application potential as a sensor or detector in biopharmaceutical, optical imaging, and other fields due to its strong tunability and high refractive index sensitivity.

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Theoretical Description of Dynamic Transmission Characteristics in MDM Waveguide Aperture-Side-Coupled with Ring Cavity

Cited by 122 publications

References 40 publications

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators

A Tunable “Ancient Coin”-Type Perfect Absorber with High Refractive Index Sensitivity and Good Angular Polarization Tolerance

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