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Updated: Aug 19, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Effective matching in a nonlinear directional coupler with waveguide mismatching and nonuniform nonlinearity
1Institute of Optics and Photonics, Department of Physics, Shanghai Jiao Tong University, No. 800, Dong Chuan Road, Min Hang, Shanghai 200240, China. jane@sjtu.edu.cn
Abstract:
A variable-coupling-coefficient nonlinear directional coupler with mismatching and nonuniformity is studied by means of coupled mode equations with effective mismatching. It is pointed out that the effective mismatching can be cancelled out for any given input power by properly adjusting the magnitudes of the mismatching and nonuniformity. Numerical examples are given to show that complete power transfer between two waveguides can be achieved for a mismatched and nonuniform nonlinear directional coupler and for a Gaussian as well as an exponential variable-coupling-coefficient nonlinear directional coupler.
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