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Opt Express. 2006 Feb 6;14(3):1223-9.

Photonic crystal directional coupler switch with small switching length and wide bandwidth.

Abstract

A directional coupler switch structure capable of short switching length and wide bandwidth is proposed. The switching length and bandwidth have a trade-off relationship in conventional directional coupler switches. Dispersion curves that avoid this trade-off are derived, and a two-dimensional photonic crystal structure that achieves these dispersion curves is presented. Numerical calculations show that the switching length of the proposed structure is 7.1% of that for the conventional structure, while the bandwidth is 2.17 times larger.

PMID:
19503444
[PubMed]
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