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Updated: Aug 29, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Supermodes of chiral photonic filters with combined twist and layer defects
Ian J Hodgkinson1, Qi-hong Wu, Lakshman De Silva
1Department of Physics, University of Otago, P.O. Box 56, Dunedin, New Zealand. ijh@physics.otago.ac.nz
Abstract:
We consider the circularly polarized localized modes of chiral photonic structures with combined central twist and isotropic layer defects. The general filter is shown to suffer from anomalous remittance and saturation of linewidth as the thickness of the structure is increased. However, by choosing parameters that phase match the elements of the round-trip matrix of the isotropic layer defect, we demonstrate the existence of supermodes that maintain exceptional purity of polarization state and exponential decrease in linewidth as the thickness is increased.
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