Measurement of the profiles of disorder-induced localized resonances in photonic crystal waveguides by local tuning
J. Lian (1,2), S. Sokolov (1,2), E. Y\"uce (2,3), S. Combri\'e (4), A., De Rossi (4), A.P. Mosk (1). ((1) Nanophotonics, Debye Institute for, Nanomaterials Science, Center for Extreme Matter, Emergent Phenomena,, Utrecht University, (2) Complex Photonic Systems (COPS)
TL;DR
This paper presents a novel local tuning technique to accurately measure the spatial profiles of disorder-induced localized resonances in photonic crystal waveguides, achieving high resolution and revealing detailed mode structures.
Contribution
The study introduces a new method for reconstructing the spatial profiles of localized modes in photonic crystal waveguides using precise local tuning and deconvolution.
Findings
Successfully reconstructed localized mode profiles with >10^5 Q factor
Achieved spatial resolution of 2.5 micrometers
Demonstrated the effectiveness of local tuning in mode analysis
Abstract
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 () is successfully reconstructed with a resolution of m.
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