Magnetized Spiral Chains of Plasmonic Ellipsoids for One-Way Optical Waveguides

Hadad, Yakir; Steinberg, Ben Z.

doi:10.1103/physrevlett.105.233904

Cited by 107 publications

(83 citation statements)

References 14 publications

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“…Plasmonic microstructures possess the unique ability of confining light into deep-subwavelength scale and strong field reinforcement effect, which provides an excellent platform for the realization of nanoscale chipintegrated photonic devices [22]. Various schemes have been proposed to demonstrate chip-integrated all-optical diode in plasmonic microstructures, such as using graded plasmonic chains based on full retardation effect [23,24], magnetized spiral chains of plasmonic ellipsoids based on interplay between the Faraday rotation and the geometrical spiral rotation under excitation of a longitudinal magnetic field [25], one-way electromagnetic modes at the interface between two dissimilar plasmonic metals (or a dielectric photonic crystal and a plasmonic metal) under excitation of a static magnetic field [26,27], or nonlinear plasmonic crystals [28], In 2011, Fan et al reported an electromagnetic diode with a transmission contrast of 14.7 dB in a microwave transmission line consisting of three metallic ring resonators and a varactor [29]. In 2013, Sun et al achieved an electromagnetic diode with a transmission contrast of 17.36 dB in a microwave waveguide system with asymmetric absorption and a varactor as a nonlinear medium [16].…”

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confidence: 99%

Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Chai

Yang

et al. 2016

Nanophotonics

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Ultracompact chip-integrated all-optical diode is realized experimentally in a plasmonic microstructure, consisting of a plasmonic waveguide side-coupled two asymmetric plasmonic composite nanocavities covered with a multicomponent nanocomposite layer, formed directly in a plasmonic circuit. Extremely large optical nonlinearity enhancement is obtained for the multicomponent nanocomposite cover layer, originating from resonant excitation, slow-light effect, and field enhancement effect. Nonreciprocal transmission was achieved based on the difference in the shift magnitude of the transparency window centers of two asymmetric plasmonic nanocavities induced by the signal light, itself, for the forward and backward propagation cases. An ultralow threshold incident light power of 145 μW (corresponding to a threshold intensity of 570 kW/cm 2 ) is realized, which is reduced by seven orders of magnitude compared with previous reports. An ultrasmall feature size of 2 μm and a transmission contrast ratio of 15 dB are obtained simultaneously.Keywords: plasmonic nanocavity; all-optical diode; plasmon-induced transparency; third-order optical nonlinearity; multicomponent nanocomposite.Ultracompact chip-integrated all-optical diode, possessing unique nonreciprocal transmission properties, is an essential and core component of optical computing system, ultrahigh-speed information processing chips, and optical communication networks [1]. For the practical on-chip integration applications, the all-optical diode should possess the following key characteristics: ultrasmall feature size, ultralow threshold power, high isolation ratio, and on-chip trigger [2,3]. The basic idea of realizing chip-integrated all-optical diode is to break the time-reversal symmetry by using indirect interband photonic transition [4][5][6][7], angular-momentum biasing [8], magneto-optic effect [9-14], third-order optical nonlinearity [15][16][17][18], in dielectric photonic microstructures with broken spatial-reversal symmetry, including asymmetric photonic crystal heterostructures and asymmetric silicon ring resonators [19,20]. The large size of dielectric photonic microstructures limits the practical on-chip integration applications of an all-optical diode [21]. Moreover, owing to the relatively small third-order nonlinear optical susceptibility of conventional organic and semiconductor materials, the threshold operation intensity is as high as GW/cm 2 order for the all-optical dielectric diode realized based on third-order optical nonlinearity [15][16][17][18][19][20]. Plasmonic microstructures possess the unique ability of confining light into deep-subwavelength scale and strong field reinforcement effect, which provides an excellent platform for the realization of nanoscale chipintegrated photonic devices [22]. Various schemes have been proposed to demonstrate chip-integrated all-optical diode in plasmonic microstructures, such as using graded plasmonic chains based on full retardation effect [23,24], magnetized spiral chains of plasmonic e...

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confidence: 99%

Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Chai

Yang

et al. 2016

Nanophotonics

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“…Instead of solving det M k (ω) = 0 to obtain the dispersion relation [10,14,17], we may apply the eigen-response theory to evaluate the dispersion relation [15,18]. Similar to the eigen-response theory, we plot 1/ |λ| as a function of k and ω, where |λ| = |λ(k, ω)| is the smallest absolute value of the eigenvalue of the matrix M k (ω).…”

Section: Model and Methodsmentioning

confidence: 99%

“…It is easy to understand that T symmetry can be broken by external static magnetic field [5], while P symmetry can be broken by using asymmetric structures such as chiral structures [5,[10][11][12] or a symmetrical structure under external magnetic field of specific orientation [13]. However, spectral reciprocity can also be protected by a combination of symmetries such as spatial-temporal symmetries, which add more complexities in the design of non-reciprocal waveguides.…”

Section: Introductionmentioning

confidence: 99%

“…Non-reciprocal bands predicted by topological band theory usually appears as surface modes attached to two-dimensional (2D) or three-dimensional (3D) bulk photonic systems. To make the device more compact, approaches based on symmetry breaking in waveguide structures usually suggest complex geometries such as helical structures [5,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Formation of nonreciprocal bands in magnetized diatomic plasmonic chains

2015

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We show that non-reciprocal bands can be formed in a magnetized periodic chain of spherical plasmonic particles with two particles per unit cell. Simplified form of symmetry operators in dipole approximations are used to demonstrate explicitly the relation between spectral non-reciprocity and broken spatial-temporal symmetries. Due to hybridization among plasmon modes and free photon modes, strong spectral non-reciprocity appears in region slightly below the lightline, where highly directed guiding of energy can be supported. The results may provide a clear guidance on the design of one-way waveguides.

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“…This realization of one-way propagation is quite different from other proposals for onewave wave-guiding. [10][11][12][13][14] The remainder of this article is organized as follows: First, we use the formalism of Ref. 5 to determine the dispersion relations for the L and T waves in the presence of an anisotropic host and a static magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Faraday rotation, band splitting, and one-way propagation of plasmon waves on a nanoparticle chain

Pike

Stroud

2016

Journal of Applied Physics

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Articles you may be interested inOvercoming the adverse effects of substrate on the waveguiding properties of plasmonic nanoparticle chains J. Appl. Phys. 119, 043101 (2016) We calculate the dispersion relations of plasmonic waves propagating along a chain of semiconducting or metallic nanoparticles in the presence of both a static magnetic field B and a liquid crystalline host. The dispersion relations are obtained using the quasistatic approximation and a dipole-dipole approximation to treat the interaction between surface plasmons on different nanoparticles. For plasmons propagating along a particle chain in a nematic liquid crystalline host with both B and the director parallel to the chain, we find a small, but finite, Faraday rotation angle. For B perpendicular to the chain, but director still parallel to the chain, the field couples the longitudinal and one of the two transverse plasmonic branches. This coupling is shown to split the two branches at the zero field crossing by an amount proportional to jBj. In a cholesteric liquid crystal host and an applied magnetic field parallel to the chain, the dispersion relations for left-and right-moving waves are found to be different. For some frequencies, the plasmonic wave propagates only in one of the two directions. V C 2016 AIP Publishing LLC.[http://dx

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Magnetized Spiral Chains of Plasmonic Ellipsoids for One-Way Optical Waveguides

Cited by 107 publications

References 14 publications

Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Chip-integrated all-optical diode based on nonlinear plasmonic nanocavities covered with multicomponent nanocomposite

Formation of nonreciprocal bands in magnetized diatomic plasmonic chains

Faraday rotation, band splitting, and one-way propagation of plasmon waves on a nanoparticle chain

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