Journal
OPTICS EXPRESS
Volume 21, Issue 9, Pages 10475-10482Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.010475
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Funding
- National Natural Science Foundation of China [61271057, 61071045, 11104026, 11174051]
- Doctoral Fund of Ministry of Education of China [20110092110009]
- National Science Foundation of China [60990324, 61138001, 60921063]
- 111 Project [111-2-05]
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The flexible control of surface plasmon polaritons (SPPs) is important and intriguing due to its wide application in novel plasmonic devices. Transformation optics (TO) offers the capability either to confine the SPP propagation on rigid curved/uneven surfaces, or to control the flow of SPPs on planar surfaces. However, TO has not permitted us to confine, manipulate, and control SPP waves on flexible curved surfaces. Here, we propose to confine and freely control flexible SPPs using TO and graphene. We show that SPP waves can be naturally confined and propagate on curved or uneven graphene surfaces with little bending and radiation losses, and the confined SPPs are further manipulated and controlled using TO. Flexible plasmonic devices are presented, including the bending waveguides, wave splitter, and Luneburg lens on curved surfaces. Together with the intrinsic flexibility, graphene can be served as a good platform for flexible transformation plasmonics. (C) 2013 Optical Society of America
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