Polarization-dependent coupling to plasmon modes on submicron gold wire in photonic crystal fiber

We present experimental results on coupling to surface plasmon modes on gold nanowires selectively introduced into polarization-maintaining photonic crystal fibers. Highly polarization- and wavelength-dependent transmission is observed. In one sample 24.5 mm long, the transmission on and off resonan...

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Bibliographic Details
Published in:Applied physics letters 2008-09, Vol.93 (11), p.111102-111102-3
Main Authors: Lee, H. W., Schmidt, M. A., Tyagi, H. K., Sempere, L. Prill, Russell, P. St. J.
Format: Article
Language:English
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Summary:We present experimental results on coupling to surface plasmon modes on gold nanowires selectively introduced into polarization-maintaining photonic crystal fibers. Highly polarization- and wavelength-dependent transmission is observed. In one sample 24.5 mm long, the transmission on and off resonance differs by as much as 45 dB. Near-field optical images of the light emerging from such a gold-filled fiber show light guided on the wire at surface plasmon resonances. Finite element simulations are in good agreement with the experimental results. These gold-filled fibers can be potentially used as in-fiber wavelength-dependent filters and polarizers and as near-field tips for sub-wavelength-scale imaging.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2982083