Guided optical modes in asymmetric left-handed waveguides

He, Yan; Cao, Zhang; Shen, Qishun

doi:10.1016/j.optcom.2004.09.067

Cited by 58 publications

(37 citation statements)

References 13 publications

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“…5 and the refe− rences therein), including a grounded dielectric slab, asym− metric dielectric slab, and multilayered dielectric slabs, all of which are important planar waveguide structures utilized in many microwave and/or optical frequency devices [5][6][7][8][9][10][11][12][13][14][15]. Examples of abnormal electromagnetic wave pro− pagations and associated phenomena in MTM waveguides include the coexistence of forward and backward wave mo− des [8][9][10][11]16], a sign−varying energy flux [12,13], surface wave suppression (or the absence of a specific mode) [10,14], and a zero or negative group velocity [11,15]. These un− usual phenomena, which are rarely been observed in con− ventional waveguiding structures, are entirely or partially due to the negative signs of the material parameters of the MTM inclusions.…”

Section: Introductionmentioning

confidence: 99%

Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

Kim

Cho

2010

Opto-Electronics Review

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The guided dispersion characteristics of the fundamental symmetric and asymmetric modes of surface waves along single- and double-negative indexed slab waveguides are investigated, and a comparative analysis made when varying the single- and double-negative permittivity and permeability. While the values of the permittivity and permeability of the slab region are varied to obtain a salient picture of the guided dispersion characteristics, identical absolute product values are used for both slab cases to facilitate a reasonable comparison. In particular, in common ranges where guided mode solutions coexist for both the single- and double-negative indexed slabs, the guided mode characteristics are similar with a lower normalized frequency regime, indicating that the sign of the material parameters has a negligible effect, whereas the characteristics become quite different as the normalized frequency increases. Some other anomalous guided dispersion properties are also discussed and compared with previously reported results.

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Section: Introductionmentioning

confidence: 99%

Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

Kim

Cho

2010

Opto-Electronics Review

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“…The wave propagating in a double-negative (DNG) medium that has simultaneous negative dielectric permittivity and magnetic permeability have been excellently discussed in [18][19][20][21]. For optical waveguides, the analyses of waves guided by thin films with photonic metamaterial are special interest [22][23][24][25]. These papers have dealt with the three-layer optical planar waveguide structures where a DNG film was bounded by two DPS media, i.e., a medium having positive dielectric permittivity and positive magnetic permeability.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Multilayer Optical Planar Waveguides With Double-Negative Metamaterial

Kuo¹,

Chen²,

Wu³

et al. 2010

PIER

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Abstract-In this study, a general method for analyzing the multilayer optical planar waveguides with photonic metamaterial is presented. The propagation characteristics of TE waves guided by the film with both the permittivity and permeability less than zero are investigated theoretically. The formulae for the electric fields of TE modes in this structure have been proposed. Typical numerical results for dispersion characteristics are shown. The analytical and numerical results show excellent agreement.

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“…Photons are emitted as an insulator's electrons restore themselves to the ground state after the disruption has passed. A reverse Cherenkov effect can be experienced using the NIMs: this means that when a charged particle passes through a (metamaterial) medium at a speed greater than the speed of light in that medium, that particle will radiate from a cone behind itself [see The subject of metamaterials, or (artificially) engineered composites, has gained un unexpected momentum and the research interest seems to have focused not only on the photonic crystals with metamaterial components [26][27][28][29][30][31][32][33] but also on the single-and multi-layered planar structures [34][35][36][37][38][39][40][41][42][43] as well as on the (usually) single cylindrical geometries [44][45][46][47][48][49][50][51][52][53][54][55]. The interesting phenomena emerging from the geometries involving metamaterials include the slowing, trapping, and releasing of the light signals [56], the proposal of the cloaking devices [57], and the extraordinary refraction of light [58] (see Fig.…”

Section: Fig 2: (Color Online)mentioning

confidence: 99%

Surface Plasmons in Coaxial Metamaterial Cables

Kushwaha

Djafari‐Rouhani

2013

Mod. Phys. Lett. B

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Thanks to Victor Veselago for his hypothesis of negative index of refraction, metamaterials -engineered composites -can be designed to have properties difficult or impossible to find in nature: they can have both electrical permitivity (ǫ) and magnetic permeability (µ) simultaneously negative. The metamaterials -henceforth negative-index materials (NIMs) -owe their properties to subwavelength structure rather than to their chemical composition. The tailored electromagnetic response of the NIMs has had a dramatic impact on the classical optics: they are becoming known to have changed many basic notions related with the electromagnetism. The present article is focused on gathering and reviewing the fundamental characteristics of plasmon propagation in the coaxial cables fabricated of the right-handed medium (RHM) [with ǫ > 0, µ > 0] and the left-handed medium (LHM) [with ǫ < 0, µ < 0] in alternate shells starting from the innermost cable. Such structures as conceived here may pave the way to some interesting effects in relation to, e.g., the optical science exploiting the cylindrical symmetry of the coaxial waveguides that make it possible to perform all major functions of an optical fiber communication system in which the light is born, manipulated, and transmitted without ever leaving the fiber environment, with precise control over the polarization rotation and pulse broadening. The review also covers briefly the nomenclature, classification, potential applications, and the limitations (related, e.g., to the inherent losses) of the NIMs and their impact on the classical electrodynamics, in general, and in designing the cloaking devices, in particular. Recent surge in efforts on invisibility and the cloaking devices seems to have spoiled the researchers worldwide: proposals include not only a way to hide an object without having to wrap the cloak around it, but also to replace a given object with another, thus adding to the deception even further! All this is attributed as much to the fundamental as to the practical advances made in the fabrication and characterization of NIMs. The report concludes addressing briefly the anticipated implications of plasmon observation in the multicoaxial cables and suggesting future dimensions worth adding to the problem. The background provided is believed to make less formidable the task of future writers of reviews in this field. The civilization of the ancient Greeks, Hindus, and Romans has been immensely influential on the art, education, architecture, language, politics, philosophy, science, and technology of the modern world: from the surviving fragments of classical antiquity until the Renaissance in Western Europe. While descriptions of disciplined empirical scientific methods have been employed since the Middle Ages, the dawn of modern science is generally traced back to the early modern period during what is known as the Scientific Revolution of the 16th and 17th centuries. From the Middle Ages to the Enlightenment, the preferred term for the study of nature a...

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Guided optical modes in asymmetric left-handed waveguides

Cited by 58 publications

References 13 publications

Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

Comparing guided modal properties of surface waves along single- and double-negative indexed slab waveguides

Analyzing the Multilayer Optical Planar Waveguides With Double-Negative Metamaterial

Surface Plasmons in Coaxial Metamaterial Cables

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