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A five-layer surface plasmon waveguide (SPWG) is proposed to be used in a superluminescent diode. It is shown that the generated light by the proposed device has higher power and broader spectrum compared with a conventional device in which a dielectric waveguide has been used. The effect of SPWG parameters on loss and spontaneous emission coupling factor is addressed, and design guidelines have been...
Transmittance of a straight junction between two plasmonic slot waveguides can be enhanced by either coupling a perpendicular stub to the input waveguide or inserting an intermediate slot section between the waveguides. We derive analytic expressions for the transmission spectra in these two configuration schemes and analyze them to obtain simple formulas, relating the parameters of the stub and intermediate...
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