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.

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.

Citation

Benetou, M. I., Bouillard, J.-S., 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), Article ARTN 444001. https://doi.org/10.1088/0957-4484/26/44/444001

• Journal Article Type: Article
• Acceptance Date: Jul 31, 2015
• Online Publication Date: Oct 15, 2015
• Publication Date: Nov 6, 2015
• Deposit Date: Sep 15, 2015
• Publicly Available Date: Nov 23, 2017
• Journal: Nanotechnology
• Print ISSN: 0957-4484
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 26
• Issue: 44
• Article Number: ARTN 444001
• DOI: https://doi.org/10.1088/0957-4484/26/44/444001
• Keywords: Plasmonics; Plasmonic crystal; Optical communications; Scanning near-field microscopy
• Public URL: https://hull-repository.worktribe.com/output/379113
• Publisher URL: http://iopscience.iop.org/article/10.1088/0957-4484/26/44/444001/meta;jsessionid=6E7DD9A46F473D0A2CFA034630B0512E.c4.iopscience.cld.iop.org
• 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 .
• Contract Date: Nov 23, 2017