Supermodes in multiple coupled photonic crystal waveguides

Publication Type:
Journal Article
Citation:
Optics Express, 2006, 14 (1), pp. 387 - 396
Issue Date:
2006-01-09
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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. © 2006 Optical Society of America.
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