Carrier diffusion and recombination in photonic crystal nanocavity optical switches

被引：66
作者：
Tanabe, Takasumi [1 ]
Taniyama, Hideaki [1 ]
Notomi, Masaya [1 ]
机构：
[1] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2008年 / 26卷 / 9-12期
关键词：
charge carrier processes; optical resonators; optical switches; periodic structures; photonic crystals;
D O I：
10.1109/JLT.2008.923638
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Carrier dynamics in silicon photonic crystal (PhC) nanocavities are studied numerically. The results agree well with previous experimental demonstrations. It is shown that the presence of carrier diffusion makes fast switching possible, which is an advantage of nanocavity switches over other types of larger carrier based nonlinear optical switches. In particular, diffusion is effective in PhC nanocavity switches, which makes the switching recovery time even faster than that of silicon waveguide-based optical switches. In addition, calculations suggest that the thermo-optic effect can be reduced if the carriers are extracted within a few 100 ps by introducing a p-i-n structure.
引用
收藏
页码：1396 / 1403
页数：8
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