Mohamed, Mohamed SabryLai, YimingMinkov, MomchilSavona, VincenzoBadolato, AntonioHoudre, Romuald2019-01-232019-01-232019-01-232018-12-0110.1021/acsphotonics.8b00960https://infoscience.epfl.ch/handle/20.500.14299/153815WOS:000454463000018A convenient approach for slowing down light in integrated optical circuits is by utilizing a set of coupled microcavities in a photonic crystal lattice. While this provides for flexibility in dispersion engineering, light transport is influenced by a combination of disorder and finite-size effects, setting limitations on the achievable slow light properties. In this study, the experimental characterization of slow light photonic crystal waveguides based on a coupled-cavity design is presented in the near-infrared wavelength range for extended chains comprising up to 800 cavities. The dispersive behavior of light along the waveguides is probed through Fourier-space imaging to elucidate the influence of disorder and cavity chain length on the optical response of the implemented design. Constraints on the slow-down factor of Bloch modes are identified in terms of decay length and induced light localization.Nanoscience & NanotechnologyMaterials Science, MultidisciplinaryOpticsPhysics, AppliedPhysics, Condensed MatterScience & Technology - Other TopicsMaterials SciencePhysicsphotonic crystalsslow lightcoupled-cavity waveguidesdisorderpair generationtext::journal::journal article::research article