Hollow-core waveguides with uniaxial metamaterial cladding: modal equations and guidance conditions

Atakaramians, Shaghik; Argyros, Alexander; Fleming, Simon; Kuhlmey, Boris T.

doi:10.1364/josab.29.002462

Cited by 41 publications

(21 citation statements)

References 49 publications

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“…1), when the core region with the permittivity ε and the radius R is embedded in cladding medium. For generality (see also [35][36][37]), the cladding medium is assumed to be uniaxial anisotropic and described by the permittivity tensorε I with non-zero components ε rrI = ε φφI = ε I and ε zzI = δ I ε I . In what follows the subscript "I" denotes quantities related to the cladding region and {E I , Figure 1.…”

Section: Core-cladding Waveguidementioning

confidence: 99%

“…Note that the transverse and the longitudinal components of the field {e I , h I } in the cladding region are also related by Eq. (4) [35,36] with ε I (and k ⊥I ) in place of ε (and k ⊥ ). With this in mind, we can use Eqs.…”

Section: Core-cladding Waveguidementioning

confidence: 99%

“…This differentiates our results from those presented in [34], which are mainly related to several special cases of frequency-dependent surface impedance. Besides, our study differs from [34] in that it concerns anisotropic cladding material [35][36][37].…”

Section: Introductionmentioning

confidence: 98%

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Analogy Between Circular Core-Cladding and Impedance Waveguides and Their Membrane Functions

Shcherbinin¹,

Zaginaylov²,

Ткаченко³

2017

PIER M

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Abstract-One-side boundary conditions on the field inside core region are obtained for core-cladding waveguide with anisotropic cladding. The boundary conditions involve two functions acting as components of anisotropic surface impedance for cladding material. These functions are determined in relation to desired values for step-index waveguide and dielectric-lined waveguide with either perfectly or finitely conducting walls. With resulting surface impedance, the perfect analogy between corecladding and impedance waveguide is achieved. Using this analogy, independent eigenvalue problems are obtained for membrane functions of HE and EH waves of core-cladding waveguide. From this result some conclusions about electromagnetic properties of HE and EH waves are drawn.

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Section: Core-cladding Waveguidementioning

confidence: 99%

Section: Core-cladding Waveguidementioning

confidence: 99%

See 1 more Smart Citation

Analogy Between Circular Core-Cladding and Impedance Waveguides and Their Membrane Functions

Shcherbinin¹,

Zaginaylov²,

Ткаченко³

2017

PIER M

View full text Add to dashboard Cite

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“…Here, low-loss guidance at mid-IR wavelengths over very board spectral domains or at THz frequencies in subwavelength cores has recently been proposed. [ 95,96,184 ] From the plasmonics point of view, the reported nanotips have the potential for establishing a new class of near-fi eld probes if combined with one or more optical waveguides, which can simultaneously deliver and collect light on the nanoscale, leading to new applications in, e.g., molecular disease diagnostics or DNA sequencing. New plasmonic materials can be integrated into fi bers, accessing device functionality which cannot be addressed with any of the currently used planar devices.…”

Section: Plasmonics/metamaterialsmentioning

confidence: 99%

Hybrid Optical Fibers – An Innovative Platform for In‐Fiber Photonic Devices

Schmidt

Argyros

Sorin

2015

Advanced Optical Materials

Self Cite

164

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The field of hybrid optical fibers is one of the most active research areas in current fiber optics and has the vision of integrating sophisticated materials inside fibers, which are not traditionally used in fiber optics. Novel in‐fiber devices with unique properties have been developed, opening up new directions for fiber optics in fields of critical interest in modern research, such as biophotonics, environmental science, optoelectronics, metamaterials, remote sensing, medicine, or quantum optics. Here the recent progress in the field of hybrid optical fibers is reviewed from an application perspective, focusing on fiber‐integrated devices enabled by including novel materials inside polymer and glass fibers. The topics discussed range from nanowire‐based plasmonics and hyperlenses, to integrated semiconductor devices such as optoelectronic detectors, and intense light generation unlocked by highly nonlinear hybrid waveguides.

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“…Among the varieties of meta-materials, Hyperbolic Meta-Materials (HMMs) have gained tremendous attention. Their exotic hyperbolic dispersion property is the key to numerous emerging nano-photonics applications, including sub-diffraction-limit imaging [1][2][3][4][5][6][7], Purcell factor enhancement [8][9][10][11][12][13], sensing [14][15][16], and waveguide engineering [17][18][19][20][21][22][23][24]. Here we report a new application of HMM for waveguide spatial mode engineering, which brings up new possibility in Spatial-Division Multiplexing (SDM).…”

mentioning

confidence: 99%

Spatial mode-selective waveguide with hyperbolic cladding

Tang¹,

Xi²,

Xu³

et al. 2016

Opt. Lett.

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Hyperbolic Meta-Materials (HMMs) are anisotropic materials with permittivity tensor that has both positive and negative eigenvalues. Here we report that by using a type II HMM as cladding material, a waveguide which only supports higher order modes can be achieved, while the lower order modes become leaky and are absorbed in the HMM cladding. This counter-intuitive property can lead to novel application in optical communication and photonic integrated circuit. The loss in our HMM-Insulator-HMM (HIH) waveguide is smaller than that of similar guided mode in a Metal-Insulator-Metal (MIM) waveguide. c 2018 Optical Society of America Meta-materials are structures engineered at the subwavelength scale to exhibit specific electromagnetic properties. The development of nanofabrication techniques allows to make these structures and to realize new properties that are unobtainable with conventional media. Among the varieties of meta-materials, Hyperbolic Meta-Materials (HMMs) have gained tremendous attention. Their exotic hyperbolic dispersion property is the key to numerous emerging nano-photonics applications, including sub-diffraction-limit imaging [1][2][3][4][5][6][7], Purcell factor enhancement [8][9][10][11][12][13], sensing [14][15][16], and waveguide engineering [17][18][19][20][21][22][23][24]. Here we report a new application of HMM for waveguide spatial mode engineering, which brings up new possibility in Spatial-Division Multiplexing (SDM).SDM utilizes the last unexplored physical dimension, space, to further increase the data carrying capacity in optical communication [25]. The excitation and separation of spatial modes is essential in SDM [26]. In this letter, we propose a mode selective slab waveguide design by using a HMM as a cladding material. With a cladding consisting of HMM, the lower order modes with larger propagation constant become propagating wave in the HMM cladding material, such that they are turned into leaky modes. At the same time, higher order modes with smaller propagation constant are evanescent wave in the HMM cladding and remain guided in the core. Also by choosing the right parameter for the cladding one can design a 'single mode' waveguide only guiding one specific higher order mode, which can be applied as mode launcher or mode receiver in a SDM system. Compared to conventional spatial multiplexing techniques based on interference [27] or holography [28], our approach merely modifies the waveguide property and requires no extra optical component, which is more compact and efficient.We only consider transverse magnetic (TM) wave (E y = 0) because the hyperbolic cladding only has the desired property for this state of polarization. The TM wave is propagating in a slab waveguide core towards the positive z direction (Fig. 1a). The core thickness is 2a. The magnetic field of the mode is independent of the y-coordinate, and has the form H y = H(x) exp(iβ m z), where β m = k z,m is the propagation constant of the m th order mode along the z-direction, which satisfies the equation, where k...

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Hollow-core waveguides with uniaxial metamaterial cladding: modal equations and guidance conditions

Abstract: We discuss the conditions in which guided modes exist in a circular waveguide with an anisotropic, uniaxial metamaterial cladding. These hollow-core waveguides can guide modes at deep subwavelength dimensions, with core diameters more than 20 times smaller than the operating wavelength.

Cited by 41 publications

References 49 publications

Analogy Between Circular Core-Cladding and Impedance Waveguides and Their Membrane Functions

Analogy Between Circular Core-Cladding and Impedance Waveguides and Their Membrane Functions

Hybrid Optical Fibers – An Innovative Platform for In‐Fiber Photonic Devices

Spatial mode-selective waveguide with hyperbolic cladding

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