A novel approach for generating giant electronic persistent currents in symmetric defect mesoscopic-ring networks

Hu, Xin; Yang, Xiangbo; Deng, Dongmei

doi:10.1016/j.physleta.2017.01.012

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Compared with the former, the structure symmetry of the latter is much more flexible [20,22,23], and the phase and amplitude measurements of the EM wave in the latter are also much more convenient [20,23]. It is found that optical waveguide networks can produce rich photonic attenuation mode [24], interesting comb-like optical transmission spectrum [25,26], extreme wide PBG [22,27,28], ultrastrong photonic localization [29][30][31][32], and so on.…”

Section: Introductionmentioning

confidence: 99%

Extraordinary characteristics for one-dimensional parity-time-symmetric periodic ring optical waveguide networks

Zhi

Yang

et al. 2018

Photon. Res.

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In this paper, we design a one-dimensional (1D) parity-time-symmetric periodic ring optical waveguide network (PTSPROWN) and investigate its extraordinary optical characteristics. It is found that quite different from traditional vacuum/dielectric optical waveguide networks, 1D PTSPROWN cannot produce a photonic ordinary propagation mode, but can generate simultaneously two kinds of photonic nonpropagation modes: attenuation propagation mode and gain propagation mode. It creates neither passband nor stopband and possesses no photonic band structure. This makes 1D PTSPROWN possess richer spontaneous PT-symmetric breaking points and causes interesting extremum spontaneous PT-symmetric breaking points to appear, where electromagnetic waves can create ultrastrong extraordinary transmission, reflection, and localization, and the maximum can arrive at 6.6556 × 10 12 and is more than 7 orders of magnitude larger than the results reported previously. 1D PTSPROWN may possess potential in designing high-efficiency optical energy saver devices, optical amplifiers, optical switches with ultrahigh monochromaticity, and so on.

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Section: Introductionmentioning

confidence: 99%

Extraordinary characteristics for one-dimensional parity-time-symmetric periodic ring optical waveguide networks

Zhi

Yang

et al. 2018

Photon. Res.

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“…Optical waveguide networks (OWNs) [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] are another type of novel artificial optical structures to manipulate the propagation of EM waves. It is found that they can produce ultrastrong photonic localization, [31] extreme wide photonic bandgap (PBG), [38,41,44] interesting comb-like optical transmission spectrum, [45,46] rich photonic attenuation mode, [49] and so on.…”

Section: Introductionmentioning

confidence: 99%

Extraordinary transmission and reflection in PT -symmetric two-segment-connected triangular optical waveguide networks with perfect and broken integer waveguide length ratios*

Yang

et al. 2019

Chinese Phys. B

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By adjusting the waveguide length ratio, we study the extraordinary characteristics of electromagnetic waves propagating in one-dimensional (1D) parity-time-symmetric ( PT -symmetric) two-segment-connected triangular optical waveguide networks with perfect and broken integer waveguide length ratios respectively. It is found that the number and the corresponding frequencies of the extremum spontaneous PT -symmetric breaking points are dependent on the waveguide length ratio. Near the extremum breaking points, ultrastrong extraordinary transmissions are created and the maximal can arrive at, respectively, 2.4079 × 10 14 and 4.3555 × 10 13 in both kinds of networks. However, bidirectional invisibility can only be produced by the networks with broken integer waveguide length ratio, whose mechanism is explained in detail from the perspective of photonic band structure. The findings of this work can be useful optical characteristic control in the fabrication of PT -symmetric optical waveguide networks, which possesses great potential in designing optical amplifiers, optical energy saver devices, and special optical filters.

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The influence of PT-symmetric degree on extraordinary optical properties of one-dimensional periodic optical waveguide networks

Zhu

Yang

Lin

et al. 2020

Optics Communications

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A novel approach for generating giant electronic persistent currents in symmetric defect mesoscopic-ring networks

Cited by 4 publications

References 29 publications

Extraordinary characteristics for one-dimensional parity-time-symmetric periodic ring optical waveguide networks

Extraordinary characteristics for one-dimensional parity-time-symmetric periodic ring optical waveguide networks

Extraordinary transmission and reflection in PT -symmetric two-segment-connected triangular optical waveguide networks with perfect and broken integer waveguide length ratios*

The influence of PT-symmetric degree on extraordinary optical properties of one-dimensional periodic optical waveguide networks

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