Browsing General by Author "Mahmoodian, Sahand"

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Browsing General by Author "Mahmoodian, Sahand"

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  • Brownless, John; Mahmoodian, Sahand; Dossou, Kokou; Lawrence, Felix; Botten, Lindsay; De Sterke, C (Optical Society of America, 2010)
    We investigate the modes of coupled waveguides in a hexagonal photonic crystal. We find that for a substantial parameter range the coupled waveguide modes have dispersion relations exhibiting multiple intersections, which ...
  • Mahmoodian, Sahand; Sipe, John; Poulton, Christopher; Dossou, Kokou; Botten, Lindsay; Mcphedran, Ross; De Sterke, C (Optical Society of America, 2012)
    We present a first-principles method to compute radiation properties of ultra-high quality factor photonic crystal cavities. Our Frequency-domain Approach for Radiation (FAR) can compute the far-field radiation pattern and ...
  • Dossou, Kokou; Poulton, Christopher; Botten, Lindsay; Mahmoodian, Sahand; Mcphedran, Ross; De Sterke, C (American Physical Society, 2009)
    We consider the modal fields and resonance frequencies of composite defects in two-dimensional photonic crystals (PCs). Using an asymptotic method based on Green's functions, we show that the coupling matrices for the ...
  • Mahmoodian, Sahand; Sukhorukov, Andrey; Ha, Sangwoo; Lavrinenko, Andrei; Poulton, Christopher; Dossou, Kokou; Botten, Lindsay; Mcphedran, Ross; De Sterke, C (Optical Society of America, 2010)
    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 ...