Frequency dependence of the optical force between two coupled waveguides

摘要

We investigate the frequency dependence of the optical force between two coupled waveguides using the su-npermode theory. We show that the frequency dependence of the optical force in a coupled waveguide systemnis determined by the dispersion relations of uncoupled individual waveguides. We further numerically cal-nculate the optical force of three representative coupled systems at different frequencies and show that thesenresults agree well with the supermode analysis. © 2009 Optical Society of America