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Boundary effects in finite size plasmonic crystals: Focusing and routing of plasmonic beams for optical communications

Benetou, M. I.; Bouillard, J-S; Segovia, P.; Dickson, W.; Thomsen, B. C.; Bayvel, P.; Zayats, A. V.

Authors

M. I. Benetou

P. Segovia

W. Dickson

B. C. Thomsen

P. Bayvel

A. V. Zayats



Abstract

Plasmonic crystals, which consist of periodic arrangements of surface features at a metal-dielectric interface, allow the manipulation of optical information in the form of surface plasmon polaritons. Here we investigate the excitation and propagation of plasmonic beams in and around finite size plasmonic crystals at telecom wavelengths, highlighting the effects of the crystal boundary shape and illumination conditions. Significant differences in broad plasmonic beam generation by crystals of different shapes are demonstrated, while for narrow beams, the propagation onto the smooth metal film is less sensitive to the crystal boundary shape. We show that by controlling the boundary shape, the size and the excitation beam parameters, directional control of propagating plasmonic modes and associated beam parameters such as angular beam splitting, focusing power and beam width can be efficiently achieved. This provides a promising route for robust and alignment-independent integration of plasmonic crystals with optical communication components.

Journal Article Type Article
Publication Date Nov 6, 2015
Journal Nanotechnology
Print ISSN 0957-4484
Electronic ISSN 1361-6528
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 26
Issue 44
Article Number ARTN 444001
Institution Citation Benetou, M. I., Bouillard, J., Segovia, P., Dickson, W., Thomsen, B. C., Bayvel, P., & Zayats, A. V. (2015). Boundary effects in finite size plasmonic crystals: Focusing and routing of plasmonic beams for optical communications. Nanotechnology, 26(44), doi:10.1088/0957-4484/26/44/444001
DOI https://doi.org/10.1088/0957-4484/26/44/444001
Keywords Plasmonics; Plasmonic crystal; Optical communications; Scanning near-field microscopy
Publisher URL http://iopscience.iop.org/article/10.1088/0957-4484/26/44/444001/meta;jsessionid=6E7DD9A46F473D0A2CFA034630B0512E.c4.iopscience.cld.iop.org
Copyright Statement ©2015 University of Hull
Additional Information This is an author-created, un-copyedited version of an article published in Nanotechnology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0957-4484/26/44/444001 .

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