Supermodes in multiple coupled photonic crystal waveguides

L. C. Botten, R. A. Hansen, C. Martijn de Sterke
2006 Optics Express  
We analyze the supermodes in multiple coupled photonic crystal waveguides for long-wavelengths. In the tight-binding limit we obtain analytic results that agree with fully numerical calculations. We find that when the field flips sign after a single photonic crystal period, and there is an odd number of periods between adjacent waveguides, the supermode order is reversed, compared to that in conventional coupled waveguides, generalizing earlier results obtained for two coupled waveguides.
doi:10.1364/opex.14.000387 pmid:19503352 fatcat:stmlipjk7bgw3g4ch57yhxkf3e