Hybrid-effect transmission enhancement induced by oblique illumination in nano-ridge waveguide

In a nano-ridge waveguide under oblique illumination, we demonstrated transmission enhancement resulting from a hybrid effect between propagation modes and surface plasmon wave. The measured near-field intensity with 44-degree illumination was 1.6 times higher than that illuminated with normal incid...

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Bibliographic Details
Published in:Optics express 2007-09, Vol.15 (18), p.11741-11749
Main Authors: Fang, Jen-Yu, Tien, Chung-Hao, Shieh, Han-Ping D
Format: Article
Language:English
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Summary:In a nano-ridge waveguide under oblique illumination, we demonstrated transmission enhancement resulting from a hybrid effect between propagation modes and surface plasmon wave. The measured near-field intensity with 44-degree illumination was 1.6 times higher than that illuminated with normal incident light. Consequently, a wedge-shaped fiber probe was proposed to serve as a compact near-field light source.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.15.011741