Graphene-based plasmonic U-shaped nanofiber biosensor: Design and analysis

Lotfi, Fariba; Sang-Nourpour, Nafiseh; Kheradmand, Reza

doi:10.1016/j.ijleo.2022.169890

Cited by 4 publications

(1 citation statement)

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“…Metamaterial-dielectric waveguides have been studied in recent years 1 , 2 with a variety of applications in optical devices, such as switches, 3 sensors, 4 , 5 modulators, 6 , 7 waveguide polarizer, 8 and nonlinear nanophotonics 9 . There are different metamaterial waveguide structures including but not limited to slab, cylindrical, and elliptical waveguides 2 , 10 …”

Section: Introductionmentioning

confidence: 99%

Analysis of hollow elliptical waveguide with metamaterial cladding

Ghasemzadeh,

Lotfi,

Kheradmand

et al. 2024

Opt. Eng.

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We characterize the behavior of modes propagating along a hollow elliptical waveguide with lossy metamaterial cladding. The proposed metamaterial-dielectric elliptical waveguide supports surface-plasmon polariton (SPP) and hybrid ordinary-SPP modes in the operating frequency ranges. Previous studies on metamaterial-dielectric elliptical waveguides either ignore the effect of energy loss on the modes characteristics or employ approximate approaches to characterize modes behavior. Although some previous works include energy loss, they do not specify SPPs propagation versus hybrid-ordinary SPPs propagation in the operating frequency ranges. Here, we consider energy loss in the waveguide to eliminate errors resulting from neglecting the loss. Our waveguide structure facilitates SPP and hybrid ordinary-SPP modes propagation along the waveguide, has better energy confinement, and higher propagation length than previous results in the literature. In the elliptical waveguide, the propagation coefficient changes by changing the waveguide eccentricity; therefore, the elliptical nature of the studied waveguide facilitates its applications in pressure optical sensors.

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