Sub-femtojoule all-optical switching using a photonic-crystal nanocavity

Kengo Nozaki, Takasumi Tanabe, Akihiko Shinya, Shinji Matsuo, Tomonari Sato, Hideaki Taniyama, Masaya Notomi

研究成果: Article査読

504 被引用数 (Scopus)

抄録

Although high-speed all-optical switches are expected to replace their electrical counterparts in information processing, their relatively large size and power consumption have remained obstacles. We use a combination of an ultrasmall photonic-crystal nanocavity and strong carrier-induced nonlinearity in InGaAsP to successfully demonstrate low-energy switching within a few tens of picoseconds. Switching energies with a contrast of 3 and 10dB of 0.42 and 0.66fJ, respectively, have been obtained, which are over two orders of magnitude lower than those of previously reported all-optical switches. The ultrasmall cavity substantially enhances the nonlinearity as well as the recovery speed, and the switching efficiency is maximized by a combination of two-photon absorption and linear absorption in the InGaAsP nanocavities. These switches, with their chip-scale integratability, may lead to the possibility of low-power, high-density, all-optical processing in a chip.

本文言語English
ページ(範囲)477-483
ページ数7
ジャーナルNature Photonics
4
7
DOI
出版ステータスPublished - 2010 7 1
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

フィンガープリント 「Sub-femtojoule all-optical switching using a photonic-crystal nanocavity」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル