Dispersion curves and fields for a chiral slab waveguide

Oksanen, Markku; Koivisto, Päivi; Lindell, Ismo V.

doi:10.1049/ip-h-2.1991.0054

Cited by 36 publications

(20 citation statements)

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“…The relationship between the transversal and longitudinal electromagnetic field components can be found in [12]. According to the boundary condition (continuity of the tangential fields) for electromagnetic field components at x = d/2, the dispersion equations of guided modes in the planar chiral waveguides can be derived as follows:…”

Section: Dispersion Equations Of General Three-layered Planar Chiral mentioning

confidence: 99%

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Characteristics of Guided Modes in Planar Chiral Nihility Meta-Material Waveguides

Dong¹,

Xu²

2009

PIER B

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Abstract-The characteristics of guided modes in the planar waveguides which the core or cladding consists of chiral nihility meta-materials are studied theoretically. The dispersion curves, electromagnetic fields, energy flow distribution and the power of several low-order guided modes in the chiral nihility waveguides are presented. Some novel features such as anomalous dispersion curves, the power flows opposite to the wave vector propagation direction in the chiral nihility waveguides have been found.

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Section: Dispersion Equations Of General Three-layered Planar Chiral mentioning

confidence: 99%

“…On the other hand, waveguides including chiral media have been studied intensively because of their important potential applications in optics and microwaves [12][13][14]. More recently, the chiral medium has been suggested to achieve NIM [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Guided Modes in Planar Chiral Nihility Meta-Material Waveguides

Dong¹,

Xu²

2009

PIER B

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“…(A9) taken with (A 10) and of the determinant of the coefficients of B* and B in Eq. (ll) taken with (12). After some algebraic manipulation, we can write these conditions in the respective forms (24), (25) and (28) represent five equations for the 5 unknowns 0*, g, h, and n^ and contain all conditions on these parameters imposed by the boundary conditions.…”

Section: The Asymmetric Planar Waveguidementioning

confidence: 99%

Modes in Chiral Core Planar Waveguides: Transition from Linear to Circular Polarization

Herman¹

1999

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Services, Directorate for Information SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S REPORT NUMBER(S)12. DISTRIBUTION/AVAILABILJTY STATEMENT Approved for public release; distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTThe general solution for modes in an asymmetric planar waveguide with an isotropic chiral core is given in terms of a pair of parameters related to the eccentricity of the polarization ellipse for the transverse electric field. This formulation provides insight into the transition, with increasing chirality of the core, from TE/TM modes to right-handed (RHC) and left-handed (LHC) circular polarization modes. The mode properties as a function of waveguide thickness and of frequency are discussed in detail. In addition to the usual cutoff at a minimum thickness (and maximum wavelength), left-handed elliptical modes are found to experience a cutoff at a mode-dependent maximum thickness (and minimum wavelength). The limiting case of a symmetric waveguide is also discussed. 029Modes in chiral core planar waveguides: transition from linear to circular polarization Warren N. Herman Department of the Navy, EO Sensors Division Code 456, NAWCAD, Patuxent River, MD 20670 AbstractThe general solution for modes in an asymmetric planar waveguide with an isotropic chiral core is given in terms of a pair of parameters related to the eccentricity of the polarization ellipse for the transverse electric field. This formulation provides insight into the transition, with increasing chirality of the core, from TE/TM modes to right-handed (RHC) and left-handed (LHC) circular polarization modes. The mode properties as a function of waveguide thickness and of frequency are discussed in detail. In addition to the usual cutoff at a minimum thickness (and maximum wavelength), left-handed elliptical modes are found to experience a cutoff at a modedependent maximum thickness (and minimum wavelength). The limiting case of a symmetric waveguide is also discussed. INTRODUCTIONThe effect of chiral media on electromagnetic waves has been the subject of investigation for two decades, with a good deal of the initial interest centered about radar wavelengths. I ' 2,3 In keeping with the interest in that part of the electromagnetic spectrum, early studies of waveguides containing chiral media were on dielectric waveguides with conducting boundaries.4,5 ' 6 ' 7 At optical wavelengths in bulk material, one of the important physical effects of chirality is optical activity.8 Chiral polymers 9 are po...

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“…The effect of the chiral medium is to rotate the plane of polarization with an angle depending on the thickness of the chiral material. Due to the novel features of chiral media, intensive interest has been focused on waveguide structures comprising chiral materials [38][39][40][41][42][43]. Waveguide structures comprising chiral media were first studied by P. Pelet [38].…”

Section: Introductionmentioning

confidence: 99%

Propagation of Electromagnetic Waves in Slab Waveguide Structure Consisting of Chiral Nihility Claddings and Negative-Index Material Core Layer

2018

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Abstract:The dispersion equation of an asymmetric three-layer slab waveguide, in which all layers are chiral materials is presented. Then, the dispersion equation of a symmetric slab waveguide, in which the claddings are chiral materials and the core layer is negative index material, is derived. Normalized cut-off frequencies, field profile, and energies flow of right-handed and left-handed circularly polarized modes are derived and plotted. We consider both odd and even guided modes. Numerical results of guided low-order modes are provided. Some novel features, such as abnormal dispersion curves, are found.

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Dispersion curves and fields for a chiral slab waveguide

Cited by 36 publications

References 1 publication

Characteristics of Guided Modes in Planar Chiral Nihility Meta-Material Waveguides

Characteristics of Guided Modes in Planar Chiral Nihility Meta-Material Waveguides

Modes in Chiral Core Planar Waveguides: Transition from Linear to Circular Polarization

Propagation of Electromagnetic Waves in Slab Waveguide Structure Consisting of Chiral Nihility Claddings and Negative-Index Material Core Layer

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