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Updated: Jun 5, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Paired modes of heterostructure cavities in photonic crystal waveguides with split band edges
Sahand Mahmoodian1, Andrey A Sukhorukov, Sangwoo Ha
1CUDOS and IPOS, School of Physics, University of Sydney, Australia. sahand@physics.usyd.edu.au
Abstract:
We investigate the modes of double heterostructure cavities where the underlying photonic crystal waveguide has been dispersion engineered to have two band-edges inside the Brillouin zone. By deriving and using a perturbative method, we show that these structures possess two modes. For unapodized cavities, the relative detuning of the two modes can be controlled by changing the cavity length, and for particular lengths, a resonant-like effect makes the modes degenerate. For apodized cavities no such resonances exist and the modes are always non-degenerate.
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