Nonlinear loss dynamics in a silicon slow-light photonic crystal waveguide.
We directly investigate both experimentally and numerically the influence of optical nonlinear loss dynamics on a silicon waveguide based all-optical device. The dynamics of these nonlinear losses are explored through the analysis of optical limiting of an amplitude distorted 10 Gbit/s signal in a slow-light silicon photonic crystal waveguide. As the frequency of the distortion approaches the free-carrier recombination rate, free-carrier absorption reaches a steady state, leaving two-photon absorption the dominant dynamic nonlinear loss. Our results highlight the importance of engineering the free-carrier lifetime in silicon waveguides for high speed all-optical processing applications.
Corcoran
Bill
B
Centre for Ultrahigh-Bandwidth Devices for Optical Systems (CUDOS), Institute for Photonics and Optical Sciences (IPOS), School of Physics, University of Sydney, New South Wales 2006, Australia. billc@physics.usyd.edu.au
Monat
Christelle
C
Pudo
Dominik
D
Eggleton
Benjamin J
BJ
Krauss
Thomas F
TF
Moss
David J
DJ
O'Faolain
Liam
L
Pelusi
Mark
M
White
Thomas P
TP