Measuring the spatial extent of individual localized photonic states

Autor: Spasenovic, Marko, Beggs, Daryl M., Lalanne, Philippe, Krauss, Thomas F., Kuipers
Rok vydání: 2011
Předmět:
Zdroj: Physical Review B 86, 155153 (2012)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevB.86.155153
Popis: 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.
Databáze: arXiv