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Proceedings Paper

Long-range surface plasmon polariton waveguides with TE and TM guiding
Author(s): K. Leosson; A. Boltasseva; T. Nikolajsen; S. I. Bozhevolnyi
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Paper Abstract

Long-range surface plasmon polariton (LRSPP) waveguides supporting both TE and TM polarized light are demonstrated experimentally. The waveguides consist of metallic nanowires with approximately 150-nm square cross sections embedded in a polymer matrix. The wavelength dependence of propagation loss and coupling loss to single mode fibers is presented. At wavelengths around 1550 nm, the nanowires exhibit a propagation loss around 4.0 dB/cm for the TM mode and 4.5 dB/cm for the TE mode. The mode field is close to symmetric and suitable for coupling to and from optical fibers. A small increase in the waveguide width, resulting in a deviation from a square cross section, is sufficient to extinguish the TE mode, making asymmetric nanowire waveguides similar to the more conventional LRSPP thin stripe waveguides. Finally, we demonstrate a compact thermo-optical variable optical attenuator based on a LRSPP nanowire waveguide.

Paper Details

Date Published: 11 September 2006
PDF: 8 pages
Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 632404 (11 September 2006); doi: 10.1117/12.678481
Show Author Affiliations
K. Leosson, Univ. of Iceland (Iceland)
A. Boltasseva, COM-DTU (Denmark)
T. Nikolajsen, Crystal Fibre A/S (Denmark)
S. I. Bozhevolnyi, Aalborg Univ. (Denmark)

Published in SPIE Proceedings Vol. 6324:
Plasmonics: Nanoimaging, Nanofabrication, and their Applications II
Satoshi Kawata; Vladimir M. Shalaev; Din Ping Tsai, Editor(s)

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