Carrier diffusion and recombination in photonic crystal nanocavity optical switches

Takasumi Tanabe, Hideaki Taniyama, Masaya Notomi

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1396-1403
Number of pages8
JournalJournal of Lightwave Technology
Volume26
Issue number11
DOIs
Publication statusPublished - 2008 Jun 1
Externally publishedYes

Fingerprint

Optical switches
Photonic crystals
switches
Switches
photonics
Silicon
crystals
Optics
Waveguides
Demonstrations
Recovery
silicon
recovery
optics
waveguides

Keywords

  • Charge carrier processes
  • Optical resonators
  • Optical switches
  • Periodic structures

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Carrier diffusion and recombination in photonic crystal nanocavity optical switches. / Tanabe, Takasumi; Taniyama, Hideaki; Notomi, Masaya.

In: Journal of Lightwave Technology, Vol. 26, No. 11, 01.06.2008, p. 1396-1403.

Research output: Contribution to journalArticle

Tanabe, Takasumi ; Taniyama, Hideaki ; Notomi, Masaya. / Carrier diffusion and recombination in photonic crystal nanocavity optical switches. In: Journal of Lightwave Technology. 2008 ; Vol. 26, No. 11. pp. 1396-1403.
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