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Bending Loss Mitigation By Surface Plasmon Resonance, Daniel Steven Spoor
Bending Loss Mitigation By Surface Plasmon Resonance, Daniel Steven Spoor
Graduate Theses - Physics and Optical Engineering
Surface plasmon resonance can be used to confine a wave within a thin metal film. The resultant wave is very well-confined by the extreme refractive index difference between the metal and the ambient medium. Such confinement can be used to guide waves under extreme conditions such as subwavelength channels or through extremely tight bends where radiation losses would normally dissipate the wave.
A nichrome thin film was deposited and etched as a shadow alongside a series of multi-mode SU-8 slab waveguides with extremely sharp angled bends. Light from a Helium-Neon laser was coupled into these waveguides and the power transmitted …