Title :
All-optical switching based on cascading of second-order nonlinearities in a periodically poled titanium-diffused lithium niobate waveguide
Author :
Kanbara, Hirohisa ; Itoh, Hiroki ; Asobe, Masaki ; Noguchi, Kazuto ; Miyazawa, Hiroshi ; Yanagawa, Tsutomu ; Yokohama, Itaru
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
3/1/1999 12:00:00 AM
Abstract :
We report efficient all-optical switching by using a periodically poled titanium-diffused lithium niobate (Ti:PPLN) waveguide. The periodically domain inversion of the Ti:PPLN waveguide is achieved by electric field poling. The switching is driven by the second-order nonlinear effect of the cascading of phase-matched sum-frequency-generation and difference-frequency-generation processes. It is found that about 12% of the signal is switched by a 20-W gate power.
Keywords :
dielectric polarisation; lithium compounds; optical frequency conversion; optical materials; optical phase matching; optical planar waveguides; optical switches; titanium; 20 W; LiNbO/sub 3/:Ti; LiNbO/sub 3/:Ti waveguide; all-optical switching; cascading; difference-frequency-generation processes; gate power; periodically domain inversion; periodically poled waveguide; phase-matched sum-frequency-generation; second-order nonlinear effect; second-order nonlinearities; Frequency conversion; Laboratories; Lithium niobate; Nonlinear optics; Optical frequency conversion; Optical mixing; Optical refraction; Optical switches; Optical variables control; Optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
