Mohamed, M. S., Lai, Y., Minkov, M., Savona, V., Badolato, A. and Houdré, R. (2018) Influence of disorder and finite-size effects on slow light transport in extended photonic crystal coupled-cavity waveguides. ACS Photonics, 5(12), pp. 4846-4853. (doi: 10.1021/acsphotonics.8b00960)
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Abstract
A 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Badolato, Professor Antonio |
| Authors: | Mohamed, M. S., Lai, Y., Minkov, M., Savona, V., Badolato, A., and Houdré, R. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | ACS Photonics |
| Publisher: | American Chemical Society |
| ISSN: | 2330-4022 |
| ISSN (Online): | 2330-4022 |
| Published Online: | 12 November 2018 |
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