Paired modes of heterostructure cavities in photonic crystal waveguides with split band edges | Zendy

Sahand Mahmoodian | Zendy; Andrey A. Sukhorukov | Zendy; Sangwoo Ha | Zendy; Andrei V. Lavrinenko | Zendy; Christopher G. Poulton | Zendy; Kokou B. Dossou | Zendy; L. C. Botten | Zendy; Ross C. McPhedran | Zendy; C. Martijn de Sterke | Zendy

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Paired modes of heterostructure cavities in photonic crystal waveguides with split band edges

Author(s) -

Sahand Mahmoodian,

Andrey A. Sukhorukov,

Sangwoo Ha,

Andrei V. Lavrinenko,

Christopher G. Poulton,

Kokou B. Dossou,

L. C. Botten,

Ross C. McPhedran,

C. Martijn de Sterke

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.025693

Subject(s) - photonic crystal , optics , degenerate energy levels , brillouin zone , guided mode resonance , heterojunction , dispersion (optics) , waveguide , resonance (particle physics) , physics , optoelectronics , materials science , diffraction , diffraction grating , particle physics , quantum mechanics

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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