Absorbing boundary conditions for low group velocity electromagnetic waves in photonic crystals

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Date
2011-03Author
Askari, Murtaza
Momeni, Babak
Reinke, Charles M.
Adibi, Ali
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We present an efficient method for the absorption of slow group velocity electromagnetic waves in photonic crystal waveguides (PCWs). We show that adiabatically matching the low group velocity waves to high group velocity waves of the PCW and extending the PCW structure into the perfectly matched layer (PML) region results in a 15 dB reduction of spurious reflections from the PML. We also discuss the applicability of this method to structures other than PCWs.
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