Open AccessSlow light enhanced optical nonlinearity in a silicon photonic crystal coupled-resonator optical waveguide
Author(s) -
Nobuyuki Matsuda,
Takumi Kato,
K. Harada,
Hiroki Takesue,
Eiichi Kuramochi,
Hideaki Taniyama,
Masaya Notomi
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019861
Subject(s) - resonator , optics , photonic crystal , waveguide , materials science , optoelectronics , slow light , silicon photonics , wavelength , four wave mixing , nonlinear optics , silicon , physics , laser
We demonstrate highly enhanced optical nonlinearity in a coupled-resonator optical waveguide (CROW) in a four-wave mixing experiment. Using a CROW consisting of 200 coupled resonators based on width-modulated photonic crystal nanocavities in a line defect, we obtained an effective nonlinear constant exceeding 10,000 /W/m, thanks to slow light propagation combined with a strong spatial confinement of light achieved by the wavelength-sized cavities.