Exploration of photonic crystal circulator based on gyromagnetic properties and scaling of ferrite materials

Umamaheswari, C.; Sundar, D. Shanmuga; Raja, Anita

doi:10.1016/j.optcom.2016.07.065

Cited by 19 publications

(8 citation statements)

References 24 publications

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“…For the first structure, the nonlinear Kerr coefficient is 𝛼|𝐸 𝑦,0 | 2 = 0.02 and for the second one, the nonlinearity ratio is 𝛼 2 𝛼 1 ⁄ = 0.2, unless otherwise stated. These parameters have been chosen for the frequency range above 1 THz for the electric field intensity of 𝐸 0 = 10 6 𝑉 𝑚 ⁄ , which have been given and explained in the literature [36][37][38][39][40][41][42][43][44]. In what follows, we will discuss the analytical results provided by MATLAB for these exemplary waveguides.…”

Section: Special Cases Of the Proposed Structure: Results And Discussionmentioning

confidence: 99%

Analytical Study of TM-Polarized Surface Plasmon Polaritons in Nonlinear Multi-Layer Graphene-Based Waveguides

Heydari

2021

Plasmonics

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In this article, an analytical model is proposed for the study of Transverse-electric (TE) surface plasmon polaritons (SPPs) in nonlinear multi-layer graphene-based waveguides. Each graphene sheet has been located between two different Kerr-type layers. As special cases of the general, proposed structure, two new nonlinear graphene-based waveguides are introduced and investigated in this paper. The obtained results show that the propagation properties of these exemplary structures are adjustable via chemical potential and nonlinear coefficients. A large value of the effective index, i.e.= 82 is obtained for the chemical potential of = 0.15 and the nonlinear ratio of 2 1 ⁄ = 0.8 for the second structure at the frequency of 61 THz. The presented study suggests a novel platform in graphene plasmonics, which can be used for the design of innovative THz devices.

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Section: Special Cases Of the Proposed Structure: Results And Discussionmentioning

confidence: 99%

Analytical Study of TM-Polarized Surface Plasmon Polaritons in Nonlinear Multi-Layer Graphene-Based Waveguides

Heydari

2021

Plasmonics

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“…As a third example, a novel graphene-based structure has been introduced and studied, in which the hybridization of graphene-ferrite at low THz frequencies can control non-reciprocal magneto-plasmons via chemical doping and magnetic bias. As mentioned before, the usage of the ferrite materials in low THz frequencies has been reported by some research articles [56][57][58][59]. Hence, it is common to use ferrite materials for designing novel plasmonic devices at low THz frequencies.…”

Section: The Third Structure: Hybrid Ferrite-graphene Waveguidementioning

confidence: 94%

“…This hybrid waveguide is able to control the propagating properties of plasmonic waves both with chemical potential and magnetic bias. It should be mentioned that the usage of the ferrite materials at low THz frequencies has been reported in some research articles [56][57][58][59][60][61]. One of the drawbacks of utilizing the ferrite materials at the THz region is their necessity for high external magnetic fields to change the permeability at this region [56,62].…”

Section: Introductionmentioning

confidence: 99%

An Analytical Study of Magneto-Plasmons in Anisotropic Multi-layer Structures Containing Magnetically Biased Graphene Sheets

Heydari

Samiei

2020

Plasmonics

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This article proposes a novel analytical model for the anisotropic multi-layer structures containing magnetically biased graphene sheets. The multi-layer structure is composed of various magnetic materials, each one has the permittivity and permeability tensors of ɛ ̿ and ̿ , respectively. An external magnetic field is applied, normal to the structure surface. Each graphene sheet, with anisotropic conductivity tensor ( ̿), has been sandwiched between two adjacent magnetic materials. Our model is used to find the dispersion relation of the structure. Now, obtaining plasmonic features of the structure, such as the effective index and propagation loss is straightforward. Four exemplary structural variants have been investigated to show the richness of the proposed general structure regarding the related specific plasmonic wave phenomena and effects. These aspects are essential to form our structural design platform to propose novel plasmonic devices such as biosensors, modulators, absorbers, transparent electrodes and tunable metamaterials in THz frequencies. A very good agreement between the analytical and full-wave simulation results is seen.

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“…OptiFDTD software was used to implement 6-port optical circulator designs based on silicon photonic crystals. The goal is to achieve higher isolation loss values between the input and isolated ports while lowering insertion loss values between the input and output ports [9,10].…”

Section: Introductionmentioning

confidence: 99%

Design And Development of A 6-Port Optical Circulator Using Silicon Photonic Crystals

Vani

Gupta

Anandan

et al. 2021

Preprint

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A 6-port optical circulator using silicon photonic crystals has been designed and proposed in this paper as an essential component of an optical communication system. The proposed 6-port circulator has greater isolation loss values between the input and isolated ports and lower insertion loss values between the input and output ports. The proposed circulator achieves maximum isolation of -38.7 dB and minimum insertion loss of 0.0029dB. The proposed designs are extremely useful in the telecommunications industry, wavelength division multiplexing and photonic integrated circuits applications due to their low insertion and high isolation losses.

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Exploration of photonic crystal circulator based on gyromagnetic properties and scaling of ferrite materials

Cited by 19 publications

References 24 publications

Analytical Study of TM-Polarized Surface Plasmon Polaritons in Nonlinear Multi-Layer Graphene-Based Waveguides

Analytical Study of TM-Polarized Surface Plasmon Polaritons in Nonlinear Multi-Layer Graphene-Based Waveguides

An Analytical Study of Magneto-Plasmons in Anisotropic Multi-layer Structures Containing Magnetically Biased Graphene Sheets

Design And Development of A 6-Port Optical Circulator Using Silicon Photonic Crystals

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