Abstract

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 15dB reduction of spurious reflections from the PML. We also discuss the applicability of this method to structures other than PCWs.

© 2011 Optical Society of America

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