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Slow light propagation in photonic crystal waveguides with ring-shaped holes

We use a single-defect photonic crystal waveguide with ring-shaped holes to achieve a small group velocity with relatively low group velocity dispersion. We show theoretically that a group index larger than 20 with a nearly constant group velocity dispersion parameter of 4.2 ps nm-1 mm-1 over a wave...

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Bibliographic Details
Published in:Journal of optics. A, Pure and applied optics Pure and applied optics, 2007-09, Vol.9 (9), p.S415-S418
Main Authors: Mulot, M, Säynätjoki, A, Arpiainen, S, Lipsanen, H, Ahopelto, J
Format: Article
Language:English
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Summary:We use a single-defect photonic crystal waveguide with ring-shaped holes to achieve a small group velocity with relatively low group velocity dispersion. We show theoretically that a group index larger than 20 with a nearly constant group velocity dispersion parameter of 4.2 ps nm-1 mm-1 over a wavelength range of 5 nm can be achieved. We manufactured a photonic crystal waveguide with ring-shaped holes onto silicon-on-insulator substrate. From the Fabry-Perot oscillations in the transmission spectrum, we deduced the group index in the waveguides as a function of the wavelength. We recorded group index values as large as 22.
ISSN:1464-4258
1741-3567
DOI:10.1088/1464-4258/9/9/S22