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Experimental observation of evanescent modes at the interface to slow-light photonic crystal waveguides

Spasenović, Marko; White, Thomas P; Ha, Sangwoo; Sukhorukov, Andrey A; Kampfrath, Tobias; Kivshar, Yuri S; de Sterke, C Martijn; Krauss, Thomas F; Kuipers, L Kobus

Description

We experimentally study the fields close to an interface between two photonic crystal waveguides that have different dispersion properties. After the transition from a waveguide in which the group velocity of light is v(g) ~ c/10 to a waveguide in which it is v(g) ~ c/100, we observe a gradual increase in the field intensity and the lateral spreading of the mode. We attribute this evolution to the existence of a weakly evanescent mode that exponentially decays away from the interface. We...[Show more]

dc.contributor.authorSpasenović, Marko
dc.contributor.authorWhite, Thomas P
dc.contributor.authorHa, Sangwoo
dc.contributor.authorSukhorukov, Andrey A
dc.contributor.authorKampfrath, Tobias
dc.contributor.authorKivshar, Yuri S
dc.contributor.authorde Sterke, C Martijn
dc.contributor.authorKrauss, Thomas F
dc.contributor.authorKuipers, L Kobus
dc.date.accessioned2016-04-21T00:04:37Z
dc.date.available2016-04-21T00:04:37Z
dc.identifier.issn0146-9592
dc.identifier.urihttp://hdl.handle.net/1885/101077
dc.description.abstractWe experimentally study the fields close to an interface between two photonic crystal waveguides that have different dispersion properties. After the transition from a waveguide in which the group velocity of light is v(g) ~ c/10 to a waveguide in which it is v(g) ~ c/100, we observe a gradual increase in the field intensity and the lateral spreading of the mode. We attribute this evolution to the existence of a weakly evanescent mode that exponentially decays away from the interface. We compare this to the situation where the transition between the waveguides only leads to a minor change in group velocity and show that, in that case, the evolution is absent. Furthermore, we apply novel numerical mode extraction techniques to confirm experimental results.
dc.description.sponsorshipThis work is part of the research program of the Stichting voor Fundamenteel Onderzoek der Materie (FOM), which is financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO). We thank the EC Marie Curie Scheme (contract MEST-CT- 2005-021000). This work was produced with the assistance of the Australian Research Council under its ARC Centres of Excellence Program.
dc.publisherOptical Society of America
dc.rights© 2011 Optical Society of America
dc.sourceOptics letters
dc.subjectKeywords: Dispersion properties; Evanescent mode; Experimental observation; Field intensity; Group velocities; Lateral spreading; Numerical mode; Photonic crystal waveguide; Laser optics; Light velocity; Optical waveguides; Photonic crystals; Slow light; Waveguides
dc.titleExperimental observation of evanescent modes at the interface to slow-light photonic crystal waveguides
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume36
dc.date.issued2011-04-01
local.identifier.absfor020501
local.identifier.ariespublicationf2965xPUB1813
local.type.statusPublished Version
local.contributor.affiliationSpasenovic, Marko, FOM Institute for Atomic and Molecular Physics (AMOLF), Netherlands
local.contributor.affiliationWhite, Thomas, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.contributor.affiliationHa , Sangwoo , College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.contributor.affiliationSukhorukov, Andrey, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.contributor.affiliationKampfrath, Tobias, FOM Institute for Atomic and Moledular Physics (AMOLF), Netherlands
local.contributor.affiliationKivshar, Yuri, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.contributor.affiliationde Sterke, C Martijn, University of Sydney, Australia
local.contributor.affiliationKrauss, Thomas F, University of St Andrews, United Kingdom
local.contributor.affiliationKuipers, L (Kobus), FOM Institute for Atomic and Molecular Physics (AMOLF), Netherlands
local.identifier.essn1539-4794
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage1170-2
local.bibliographicCitation.lastpage1172
local.identifier.doi10.1364/OL.36.001170
local.identifier.absseo970102
dc.date.updated2016-06-14T08:34:59Z
local.identifier.scopusID2-s2.0-79956137289
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