Metal-dielectric metamaterials for guided wave silicon photonics

Lupu, Anatole; Dubrovina, Natalia; Ghasemi, Rasta; Degiron, Aloyse; Lustrac, André de

doi:10.1364/oe.19.024746

Cited by 20 publications

(21 citation statements)

References 41 publications

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“…The observed transmission and reflection behavior suggests that for small enough separation distance along the propagation direction, the hybrid metamaterial waveguide can be treated as an equivalent homogeneous waveguide (Fig. 5a) [19]. The transmission and reflection of the equivalent homogeneous waveguide was determined using the characteristic matrix for a plane wave propagating in a layered optical medium [20].…”

Section: Experiments and Resultsmentioning

confidence: 99%

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Nanoscale engineering of the waveguide local effective index by metamaterial resonances: Toward transformation optics applications

Lupu

Dubrovina

Salas‐Montiel

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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In this paper we address the potential of metallic metamaterials in guided wave configurations to explore the possibility of their use for transformation optics applications in the near-infrared domain (λ = 1.5 µm). The experimentally investigated hybrid metamaterial structure is made of 2D array of 200×50×50 nm gold cut wires located on the top of high index silicon on insulator (SOI) waveguide. The experimental and modelling results show that composite waveguide effective index and propagation losses can be accurately controlled through the engineering of metamaterial properties. The possibility for controlling at the nanoscale the local effective index can be used in transformation optics applications. The hybrid metamaterial guided wave configuration may become a promising alternative to the bulk multi-layers metamaterial structures in the near infrared domain.

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Section: Experiments and Resultsmentioning

confidence: 99%

“…2b). In order to obtain the resonance frequency around 200 THz, which corresponds to 1.5 µm wavelength, we fix the CWs dimensions to 200×50×50 nm [18,19]. The separation of two adjacent cut wires along the longitudinal axis, which is perpendicular to the light propagation direction, is set to 100 nm.…”

Section: Design and Fabricationmentioning

confidence: 99%

Nanoscale engineering of the waveguide local effective index by metamaterial resonances: Toward transformation optics applications

Lupu

Dubrovina

Salas‐Montiel

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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“…However in certain cases it is more convenient to use instead a guided wave configuration where metasurface array is integrated on the top of a dielectric waveguide [14]. The adaption of the method to the guided wave configuration can be achieved by considering an anti-symmetric arrangement of disconnected V-type nano-antennas (Fig.…”

Section: Adaption Of the Dark Mode Concept To The Guided Wave Configumentioning

confidence: 99%

Dark modes excitation and symmetry related properties of metasurfaces

Dubrovina

Bochkova

Burokur

et al. 2015

2015 17th International Conference on Transparent Optical Networks (ICTON)

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The objective of the present work is to introduce a new concept of direct dark mode excitation mechanism in a metasurface structure. The dark mode excitation is entirely determined by structures' symmetry and does not depend on hybridization mechanism related to near-field coupling between elements. In our examples we consider single element based metasurface composed of two V nano-antennas having an anti-symmetric arrangement. Both experimental and modeling results show an efficient excitation of dark mode in such structures. The considered approach opens promising perspectives for new type of nanostructure designs and greatly relaxes fabrication constraints for the optical domain where such kind of resonances presenting sharp spectral features with steep intensity variation are highly desirable for sensing applications.

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“…In order to obtain the resonance frequency around 200THz, which corresponds to 1.5μm wavelength, we fix the CWs dimensions to 200×50×50nm [16,17]. The separation of two adjacent cut wires along the longitudinal axis, which is perpendicular to the light propagation direction, is set to 100nm.…”

Section: Design and Fabricationmentioning

confidence: 99%

Guided wave metamaterial configurations for application in the near IR domain

Dubrovina¹,

Salas‐Montiel²,

Blaize³

et al. 2013

2013 7th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics

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-We address the potential of a metamaterials in a guided wave configuration for applications in the near IR domain. We consider a hybrid type structure made of 2D metamaterial array over a high index slab waveguide, as for instance silicon our case. The experimental and modeling results show that effective index and loss level in such hybrid waveguides can be carefully controlled by the engineering of metamaterial resonances. The investigated approach may constitute a promising alternative to the bulk multi-layers metamaterial structures. I. INTRODUCTIONThe sustained interest generated by the advent of metamaterials (MMs) during the past decade is strongly driven by their ability for an efficient tailoring of electromagnetic waves propagation in such artificial composite media effective index leading to a range of intriguing and unusual properties which are not encountered in natural media [1,2]. Among the most fascinating applications we can note the invisibility cloak [3-6], concentrators [7], rotators [8], wormholes [9].For the time being most of the experimental demonstrations for the transformation optics applications using metallic MMs were performed in the microwave domain [3][4][5]. Demonstrations in the optical domains are essentially limited to all dielectric MMs [9][10][11][12]. The two essential factors preventing the use of metallic MMs in the optical domain are related to the planar technology limitations for the number of MMs layers in the stack [13][14][15] and the losses due to the absorption of the metal resonator elements.To circumvent these issues of metallic MMs, we considered a hybrid type photonic structures in which metallic parts are coupled with dielectric (and almost lossless) waveguides (Fig. 1). In this configuration, useful functionalities are obtained by allowing just enough light to interact with the metallic parts of the system. The experimental validation of the technological feasibility and operation of the MMs in a guided wave configuration in the spectral domain around 1.5μm is the aim of the present work.

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Metal-dielectric metamaterials for guided wave silicon photonics

Cited by 20 publications

References 41 publications

Nanoscale engineering of the waveguide local effective index by metamaterial resonances: Toward transformation optics applications

Nanoscale engineering of the waveguide local effective index by metamaterial resonances: Toward transformation optics applications

Dark modes excitation and symmetry related properties of metasurfaces

Guided wave metamaterial configurations for application in the near IR domain

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