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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Nonlinear wave propagation along a bent nonlinear dielectric interface.

¹Department of Electrical Engineering, Shizuoka University, Hamamatsu, 432 Japan.

|September 24, 2009

Summary

Nonlinear surface waves can propagate along bent interfaces toward nonlinear media, enabling lower-threshold all-optical waveguide devices. This research verifies nonlinear surface wave propagation and aids in designing waveguide devices with bends.

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Area of Science:

Nonlinear optics
Waveguide theory
Photonics

Background:

Nonlinear surface waves are crucial for optical devices.
Understanding their behavior at interfaces is essential for device design.
Bent interfaces present unique challenges for wave propagation.

Purpose of the Study:

Investigate transmission properties of bent nonlinear interfaces.
Derive threshold power for straight interfaces.
Explore propagation characteristics of surface waves at bent interfaces.

Main Methods:

Utilized the beam-propagation method for numerical simulations.
Developed an approximate analytical solution for threshold power.
Analyzed wave propagation along abruptly and uniformly bent interfaces.

Main Results:

Surface waves propagate along interfaces bent toward nonlinear media.
Surface waves do not propagate along interfaces bent toward linear media.
Bent interfaces offer potential for lower-threshold all-optical devices.

Conclusions:

Bent nonlinear interfaces can support surface wave propagation.
These findings are valuable for designing all-optical waveguide devices with bends and tapers.
The study provides a basis for experimental verification of nonlinear surface waves.