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

Ren, Xiao Bin; Ren, Kun; Zhang, Ying; Ming, Cheng guo; Han, Qun

doi:10.3762/bjnano.10.236

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…With the decrease of the ITD vertical cavity height, the intensity of EIT is enhanced, but the position of EIT blue shifts, and the peak value and position of FR2 are unchanged completely. It can be further proved by resonance function [51]:…”

Section: Manipulating Fr2 and Eit Independently And Simultaneously By...mentioning

confidence: 97%

Band-stop filter based on tunable Fano resonance and electromagnetically induced transparency in metal-dielectric-metal waveguide coupling systems

Guo¹,

Huo²,

Niu³

et al. 2020

Phys. Scr.

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Metal-dielectric-metal (MIM) waveguide coupling systems based on surface plasmon polaritons (SPPs) are designed and studied. The finite element method is used to simulate the transmission spectra of structures in the whole simulation process. One waveguide coupling system consists of an inverted T-shaped cavity with defect (ITD) and a waveguide with a metal wall. The filter band appears in the transmission spectrum due to the opposite direction of two Fano resonances. The filter band width and the filtering range can be tuned effectively by changing the structure parameters. In this system, the center frequency and bandwidth of the filter band are 1330 nm and 114 nm, respectively. The insertion loss and reflection loss are −1.41 dB and −16.89 dB, respectively. The optimization is carried out on the basis of the first system in order to improve the filtering performance. Optimized waveguide coupling system contains an ITD and a waveguide with a slot cavity. Electromagnetically induced transparency (EIT) and Fano resonance exist simultaneously, and the filter band is induced in the transmission spectrum. In this system, the center frequency and bandwidth of the filter band are 1412 nm and 120 nm, respectively. The insertion loss and reflection loss are −0.50 dB and −37.32 dB, respectively. EIT and Fano resonance can not only be regulated independently, but also be regulated simultaneously by changing the structural parameters. And the intensity of EIT and the width of the filter band can be manipulated with changes of the structural parameters. The transmission response of SPPs propagating in the structure can be adjusted dynamically. Moreover, these novel SPPs optical waveguide structures have good filtering efficiency and can meet different filtering needs. These results show that the proposed systems are promising for filter, slow light device and photonic device integration applications.

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Section: Manipulating Fr2 and Eit Independently And Simultaneously By...mentioning

confidence: 97%

Band-stop filter based on tunable Fano resonance and electromagnetically induced transparency in metal-dielectric-metal waveguide coupling systems

Guo¹,

Huo²,

Niu³

et al. 2020

Phys. Scr.

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“…To explore the mechanism behind the EIT-like effect in metasurfaces, a coupled Lorentz oscillator (COL) model can be employed to analyze the transmission spectrum [11,41]. Consider an x-polarized wave E = E 0 exp(iωt) that is incident on the metasurface and allows for the direct excitation of electric dipole modes.…”

Section: Structure and Eit Spectrummentioning

confidence: 99%

Multi-band tunable electromagnetically induced transparencies based on active metasurface with polarization-independent property

Ren,

Wang,

Ren

et al. 2024

J. Phys. D: Appl. Phys.

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The analogue of electromagnetically induced transparency (EIT) spectrum is achieved using a metasurface that consists of an array of cross and L-shaped resonators. The mechanism of the EIT-like phenomenon is analyzed, and the influence of geometrical parameters on the effect is discussed. We achieve multi-band EIT-like through structure configuration. In particular, polarization-independent EIT is realized. The potential application in sensing is suggested and the sensitivity of 65 GHz / RIU is obtained. We also investigate the impact of analyte and substrate on the transmission spectrum. We find that when the analyte thickness is higher than 40μm, EIT spectral shift is less affected by the analyte thickness. The thickness insensitive characteristic is beneficial for reducing errors caused by analyte dose, thereby improving the accuracy of sensing. By introducing phase change material Vanadium dioxide, we obtain active control on EIT effect. Our results provide valuable insights into the development of multi-band tunable compact devices based on metasurfaces.

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“…The improvement of sensing performance by constructing nanostructures has also been successfully reported in mesoporous ZnO nanosheets, atomically thin-layered MoS 2 , WS 2 nanosheets, etc. [39][40][41][42] A comparative table about the sensor performance of this work with some other NO sensors is shown in Table 1. Most of Fig.…”

Section: Gas Sensing Propertiesmentioning

confidence: 99%

Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath

et al. 2020

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

Cited by 6 publications

References 33 publications

Band-stop filter based on tunable Fano resonance and electromagnetically induced transparency in metal-dielectric-metal waveguide coupling systems

Band-stop filter based on tunable Fano resonance and electromagnetically induced transparency in metal-dielectric-metal waveguide coupling systems

Multi-band tunable electromagnetically induced transparencies based on active metasurface with polarization-independent property

Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath

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