Single-mode subwavelength waveguide with channel plasmon-polaritons in triangular grooves on a metal surface
Gramotnev, Dmitri K. & Pile, David F. P. (2004) Single-mode subwavelength waveguide with channel plasmon-polaritons in triangular grooves on a metal surface. Applied Physics Letters, 85(26), pp. 6323-6325.
We demonstrate that single-mode operation of a sub-wavelength plasmonic waveguide in the form of a V-groove on a metal surface can be achieved by adjusting depth of the groove. Strongly localized channel plasmon-polaritons (CPPs) are shown to propagate in such waveguides. If the groove depth is close to the penetration depth of the fundamental CPP mode, then all higher modes are not supported by the structure, leaving only the fundamental mode propagating in the groove. In this case, propagation distances of fundamental mode ~ 10 micron can easily be achieved together with strong sub-wavelength localization.
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|Item Type:||Journal Article|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2004 American Institute of Physics|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||26 May 2005|
|Last Modified:||29 Feb 2012 23:06|
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