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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Discrimination between two mechanisms of surface scattering in a single-mode waveguide.

M Rendón¹, F M Izrailev, N M Makarov

¹Facultad de Ciencias de la Electrónica, Universidad Autónoma de Puebla, Puebla, México. mrendon@ece.buap.mx

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|December 21, 2011

Summary

This study investigates surface scattering in single-mode waveguides, distinguishing between amplitude and square-gradient mechanisms. It reveals that these scattering types can operate independently across different wave number ranges, impacting waveguide transport properties.

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Area of Science:

Physics
Condensed Matter Physics
Waveguide Optics

Background:

Waveguide transport properties are crucial for optical and electronic devices.
Surface roughness significantly influences scattering phenomena in waveguides.
Understanding scattering mechanisms is key to controlling signal propagation.

Purpose of the Study:

To discriminate between amplitude and square-gradient surface scattering mechanisms in single-mode waveguides.
To analyze the conditions under which these scattering mechanisms can operate independently.
To assess the implications of these findings for realistic waveguide structures.

Main Methods:

Theoretical analysis of transport properties in a waveguide with a rough boundary.
Discrimination between two distinct surface scattering mechanisms: amplitude and square-gradient.
Investigation of scattering behavior across different intervals of wave numbers.

Main Results:

Identified conditions where amplitude and square-gradient scattering mechanisms operate in non-overlapping wave number intervals.
Demonstrated that these mechanisms, though generally mixed, can exhibit distinct operational ranges.
Highlighted the potential importance of this separation in realistic scenarios with correlated scattering profiles.

Conclusions:

The independent operation of scattering mechanisms in waveguides is possible under specific conditions.
Long-range correlations in scattering profiles can lead to separable scattering behaviors.
This research provides insights into controlling transport properties in optical and electronic devices.