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Measurement of the profiles of disorder-induced localized resonances in photonic crystal waveguides by local tuning

Lian, Jin
Sokolov, Sergei
Yüce, Emre
COMBRİÉ, Sylvain
De Rossi, Alfredo
Mosk, Allard P.
Near the band edge of photonic crystal waveguides, localized modes appear due to disorder. We demonstrate a new method to elucidate spatial profile of the localized modes in such systems using precise local tuning. Using deconvolution with the known thermal profile, the spatial profile of a localized mode with quality factor (Q) > 10(5) is successfully reconstructed with a resolution of 2.5 mu m. (C) 2016 Optical Society of America