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      Guiding properties of asymmetric hybrid plasmonic waveguides on dielectric substrates

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          Abstract

          We proposed an asymmetric hybrid plasmonic waveguide which is placed on a substrate for practical applications by introducing an asymmetry into a symmetric hybrid plasmonic waveguide. The guiding properties of the asymmetric hybrid plasmonic waveguide are investigated using finite element method. The results show that, with proper waveguide sizes, the proposed waveguide can eliminate the influence of the substrate on its guiding properties and restore its broken symmetric mode. We obtained the maximum propagation length of 2.49 × 10 3 μm. It is approximately equal to that of the symmetric hybrid plasmonic waveguide embedded in air cladding with comparable nanoscale confinement.

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          Optical Constants of the Noble Metals

          P. Johnson, R. Christy (1972)
          Article 0 comments Cited 3226 times – based on 0 reviews     Review now
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            Surface plasmon subwavelength optics.

            William Barnes, Alain Dereux, Thomas Ebbesen (2003)
            Surface plasmons are waves that propagate along the surface of a conductor. By altering the structure of a metal's surface, the properties of surface plasmons--in particular their interaction with light--can be tailored, which offers the potential for developing new types of photonic device. This could lead to miniaturized photonic circuits with length scales that are much smaller than those currently achieved. Surface plasmons are being explored for their potential in subwavelength optics, data storage, light generation, microscopy and bio-photonics.
            Article 0 comments Cited 2017 times – based on 0 reviews     Review now
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              Channel plasmon subwavelength waveguide components including interferometers and ring resonators.

              Sergey Bozhevolnyi, Valentyn S. Volkov, Eloïse Devaux … (2006)
              Photonic components are superior to electronic ones in terms of operational bandwidth, but the diffraction limit of light poses a significant challenge to the miniaturization and high-density integration of optical circuits. The main approach to circumvent this problem is to exploit the hybrid nature of surface plasmon polaritons (SPPs), which are light waves coupled to free electron oscillations in a metal that can be laterally confined below the diffraction limit using subwavelength metal structures. However, the simultaneous realization of strong confinement and a propagation loss sufficiently low for practical applications has long been out of reach. Channel SPP modes--channel plasmon polaritons (CPPs)--are electromagnetic waves that are bound to and propagate along the bottom of V-shaped grooves milled in a metal film. They are expected to exhibit useful subwavelength confinement, relatively low propagation loss, single-mode operation and efficient transmission around sharp bends. Our previous experiments showed that CPPs do exist and that they propagate over tens of micrometres along straight subwavelength grooves. Here we report the design, fabrication and characterization of CPP-based subwavelength waveguide components operating at telecom wavelengths: Y-splitters, Mach-Zehnder interferometers and waveguide-ring resonators. We demonstrate that CPP guides can indeed be used for large-angle bending and splitting of radiation, thereby enabling the realization of ultracompact plasmonic components and paving the way for a new class of integrated optical circuits.
              Article 0 comments Cited 399 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Nanoscale Res Lett
                Journal ID (iso-abbrev): Nanoscale Res Lett
                Title: Nanoscale Research Letters
                Publisher: Springer
                ISSN (Print): 1931-7573
                ISSN (Electronic): 1556-276X
                Publication date Collection: 2014
                Publication date (Electronic): 10 January 2014
                Volume: 9
                Issue: 1
                Page: 13
                Affiliations
                [1 ]State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts Telecommunications, P. O. Box 66, Beijing 100876, China
                Article
                Publisher ID: 1556-276X-9-13
                DOI: 10.1186/1556-276X-9-13
                PMC ID: 3895746
                PubMed ID: 24406096
                SO-VID: 16597acd-ce42-4a93-a753-ffaebebb6c77
                Copyright © Copyright © 2014 Wei et al.; licensee Springer.
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 18 December 2013
                Date accepted : 5 January 2014
                Categories
                Subject: Nano Express

                ScienceOpen disciplines: Nanomaterials
                Keywords: hybrid plasmonic waveguides,integrated photonic devices,surface plasmons
                Data availability:
                ScienceOpen disciplines: Nanomaterials
                Keywords: hybrid plasmonic waveguides, integrated photonic devices, surface plasmons

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