Abstract
We measure the spatial extent of individual photonic states that are localized by residual disorder in a slow-light photonic crystal waveguide. The size of the states is measured by locally perturbing them individually through an electromagnetic interaction with a near-field probe. We identify localized states that are not observed in transmission and show that they are shorter than the waveguide length. We also obtain near-field measurements of the participation ratio, from which the size of the states is also derived, in quantitative agreement with the size measured with the perturbation method.
Original language | English |
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Article number | 155153 |
Number of pages | 5 |
Journal | Physical Review B: Condensed Matter and Materials Physics |
Volume | 86 |
Issue number | 15 |
DOIs | |
Publication status | Published - 26 Oct 2012 |
Keywords
- CRYSTAL WAVE-GUIDES
- ANDERSON LOCALIZATION
- SLOW-LIGHT
- EVANESCENT MODES
- FIELD
- LATTICES
- SYSTEMS