Measuring the spatial extent of individual localized photonic states

Abstract

We measure the spatial extent of individual localized photonic states in a slow-light photonic crystal waveguide. The size of the states is measured by perturbing each state individually through a local electromagnetic interaction with a near-field probe. We find localized states which are not observed in transmission and show that these states are shorter than the waveguide. We also directly obtain near-field measurements of the participation ratio, from which the size of the states can be derived, in quantitative agreement with the size measured with the perturbation method.

References in corpus (5)

• Direct observation of Anderson localization of matter-waves in a controlled disorder
• Localization of ultrasound in a three-dimensional elastic network
• Cavity Quantum Electrodynamics with Anderson-localized Modes
• Extended quasimodes within nominally localized random waveguides
• Photonic-Crystal Waveguides with Disorder: Measurement of a Band-Edge Tail in the Density of States

Cited by in corpus (9)

• Lower bound for the spatial extent of localized modes in photonic-crystal waveguides with small random imperfections
• Strong Coupling to Two-Dimensional Anderson Localized Modes
• Photonic-Crystal Waveguides with Disorder: Measurement of a Band-Edge Tail in the Density of States
• Physics of quantum light emitters in disordered photonic nanostructures
• Measurement of the profiles of disorder-induced localized resonances in photonic crystal waveguides by local tuning
• A polarizing situation: Taking an in-plane perspective for next-generation near-field studies
• A fully automated dual-tip scanning near-field optical microscope for localized optical excitation and detection in the visible and near-infrared
• Direct experimental determination of critical disorder in one-dimensional weakly disordered photonic crystals
• Light confinement by local index tailoring in inhomogeneous dielectrics