Mode characteristics of nested eccentric waveguides constructed by two cylindrical nanowires coated with graphene

Ji, Liu; Yu, Li; Xue, Wu

doi:10.1088/1674-1056/ac1e17

Cited by 2 publications

(2 citation statements)

References 41 publications

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“…Notably, mode 0 exhibits a superior figure of merit and the most optimal performance among these modes within the relevant parameter range. Furthermore, the characteristics of these modes can be tailored by adjusting the waveguide's parameters, the working wavelength, and the Fermi energy of graphene [42,43].…”

Section: Introductionmentioning

confidence: 99%

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Surface Plasmon Waveguide Based on Nested Dielectric Parallel Nanowire Pairs Coated with Graphene

Yu,

Liu,

Xue

2024

Photonics

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A kind of surface plasmon waveguide composed of two nested cylindrical dielectric parallel nanowire pairs coated with graphene was designed and studied. The dependence of the mode characteristics and the normalized gradient force of the lowest two modes supported by the waveguide on the parameters involved were analyzed by using the multipole method. To ensure rigor, the finite element method was employed to verify the accuracy of the multipole method, thus confirming its results. The results show that the multipole method is a powerful tool for handling this type of waveguide. The real part of the effective refractive index, the propagation length, the figure of merit, and the normalized gradient force can be significantly affected by the operating wavelength, the Fermi energy of graphene, the waveguide geometric parameters, and the refractive index of the inner dielectric nanowire. Due to the employment of nested dielectric nanowire pairs coated with graphene, this waveguide structure exhibits significant gradient force that surpasses 100 nN·μm−1·mW−1. The observed phenomena can be attributed to the interaction of the field with graphene. This waveguide holds promising potential for applications in micro/nano integration, optical tweezers, and sensing technologies.

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Section: Introductionmentioning

confidence: 99%

“…Based on our previous work [43], here, we designed a new type of waveguide composed of nested dielectric parallel nanowire pairs coated with graphene. To our knowledge, this type of eccentric nested dielectric parallel nanowire pairs coated with graphene has not been studied previously.…”

Section: Introductionmentioning

confidence: 99%

Surface Plasmon Waveguide Based on Nested Dielectric Parallel Nanowire Pairs Coated with Graphene

Yu,

Liu,

Xue

2024

Photonics

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Mode characteristics of a graphene-coated cylindrical dielectric waveguide with a nested eccentric hollow elliptical cylinder

Xue

et al. 2022

J. Opt. Soc. Am. B

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A cylindrical dielectric nanowire waveguide embedded with an eccentric hollow elliptical cylinder is designed. The mode characteristics of the first three modes supported by the waveguide are studied by the multipole method and verified by the finite element method. Results show that the waveguide has the best transmission performance when the symmetric center of the hollow elliptical cylinder is located on the y axis of the cylindrical dielectric nanowire. The influence of the working wavelength, the Fermi energy, and the dielectric constant of region II on the transmission performance of the waveguide is great, while the influence of the semi-long axis, the semi-short axis of the elliptic cylinder, the radius of the cylinder, and the minimum distance between two rods on the transmission performance of the waveguide is less. Compared with the other waveguide structures, the waveguide introduced in this paper has a better overall transmission performance. This kind of waveguide can provide a theoretical basis for the design, fabrication, and application of graphene-coated nested nanowire waveguides.

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Mode characteristics of nested eccentric waveguides constructed by two cylindrical nanowires coated with graphene

Cited by 2 publications

References 41 publications

Surface Plasmon Waveguide Based on Nested Dielectric Parallel Nanowire Pairs Coated with Graphene

Surface Plasmon Waveguide Based on Nested Dielectric Parallel Nanowire Pairs Coated with Graphene

Mode characteristics of a graphene-coated cylindrical dielectric waveguide with a nested eccentric hollow elliptical cylinder

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