Hybrid plasmonic waveguide for low-loss lightwave guiding
TLDR
A hybrid plasmonic waveguide structure is proposed and fabricated for low-loss lightwave guiding along a metal stripe core by embedding Au stripe in dual slab waveguides with high refractive-index contrast, and the propagation loss is significantly reduced.Abstract:
A hybrid plasmonic waveguide structure is proposed and fabricated for low-loss lightwave guiding along a metal stripe core. By embedding Au stripe in dual slab waveguides with high refractive-index contrast, the field of the guided mode is confined more in the two dielectric core layers. Thus, the propagation loss is significantly reduced. The guided mode is like a combination of a fundamental long-range surface plasmon polariton strip mode and a dual symmetric dielectric slab mode. We fabricate 5 nm-thick Au stripe optical waveguides and measure the optical properties at a wavelength of 1.31 µm. The propagation loss is less than 1.0 dB/cm with the metal stripe width of 1–5 μm.read more
Citations
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References
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