Wannier functions and the calculation of localized modes in one-dimensional photonic crystals
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The localized modes of a layered photonic crystal with a substitutional defect are calculated by expanding the magnetic field over a truncated set of Wannier functions. Good agreement is found with the results obtained by the transfer-matrix technique. It is shown that frequencies converge very fast (slowly) as the number of unit cells (photonic bands) in the truncated set is increased.
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Journal of the Optical Society of America B: Optical Physics, v. 35, n. 4, p. 826-834, 2018.
