Berlin 2005 – scientific programme

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HL: Halbleiterphysik

HL 49: Photonische Kristalle II

HL 49.2: Talk

Tuesday, March 8, 2005, 11:00–11:15, TU P164

Dispersion properties of coupled modes in photonic crystal waveguides — •Alexander Petrov and Manfred Eich — TU Hamburg-Harburg, AB 4-09, Eissendorfer Strasse 38, D-21073 Hamburg, Germany

The power flow redistribution in photonic crystal line-defect waveguides can lead to the appearance of modes with very small group velocities away from the Brillouin zone edge. There are also modes with the power flow distribution similar to the one of conventional dielectric waveguides, these modes propagate with normal group velocities. High values of dispersion can be obtained when different frequencies propagate with different group velocities. This can be achieved by coupling of two different modes in a single waveguide or between two parallel waveguides. Several designs are investigated with band diagrams and time domain simulations. Several hundred ps/nm/mm dispersion without third order dispersion is predicted on the bandwidth of a single wavelength division multiplexing channel.