dc.contributor.authorGao, Zhen
dc.contributor.authorGao, Fei
dc.contributor.authorXu, Hongyi
dc.contributor.authorZhang, Youming
dc.contributor.authorZhang, Baile
dc.identifier.citationGao, Z., Gao, F., Xu, H., Zhang, Y., & Zhang, B. (2016). Experimental demonstration of a band-notched line-defect waveguide in a surface-wave photonic crystal. Applied Physics Letters, 109(13), 131103-.en_US
dc.description.abstractWe propose and experimentally demonstrate a band-notched line-defect waveguide in a surface-wave photonic crystal, which consists of a straight line-defect waveguide and side-coupled defect cavities. A narrow stop band can be observed in the broadband transmission spectra. We also demonstrate that both the filtering levels and filtering frequencies of the band-notched line-defect waveguide can be adjusted through changing the number and the height of metallic pillars of the side-coupled defect cavities. The band-notch function is based on the idea that the propagating surface modes with the resonance frequencies of the side-coupled defect cavities will be tightly localized around the defect sites, being filtered from the waveguide output. Transmission spectra measurements and direct near-field profile imaging are performed at microwave frequencies to verify our design. These results may enable various band-notched devices applications and provide routes for the realization of surface-wave filters on a single metal surface.en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.format.extent5 p.en_US
dc.relation.ispartofseriesApplied Physics Lettersen_US
dc.rights© 2016 American Institute of Physics (AIP). This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: [http://dx.doi.org/10.1063/1.4963707]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectPhotonic crystal waveguidesen_US
dc.subjectCrystal defectsen_US
dc.titleExperimental demonstration of a band-notched line-defect waveguide in a surface-wave photonic crystalen_US
dc.typeJournal Article
dc.contributor.researchCentre for Disruptive Photonic Technologiesen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US

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