Title :
All-optical routing switch using a fiber nonlinear directional coupler and controlling solitons
Author :
Man, Wai Sing ; Demokan, M. Süleyman ; Tam, HwaYaw
Author_Institution :
Dept. of Electr. Eng., Hong Kong Univ., Kowloon, Hong Kong
fDate :
12/1/1996 12:00:00 AM
Abstract :
A routing all-optical switch in which the signal, consisting of a fundamental soliton, is directed into either of the output ports of a 2×2 nonlinear directional coupler is investigated by means of computer simulation. The routing is controlled by copropagating a controlling pulse along with the signal pulse. Four different schemes for doing this are explored where the polarization of the controlling pulse with respect to the signal soliton may be varied, or the controlling pulse may be launched into either of the input ports, or it may have a wavelength different from that of the signal. It is shown that only one of the schemes allows a high switching efficiency and enables distortionless propagation of the signal pulse through the coupler
Keywords :
optical communication equipment; optical fibre polarisation; optical fibre theory; optical solitons; optical switches; telecommunication network routing; 2×2 nonlinear directional coupler; all-optical routing switch; computer simulation; controlling pulse; controlling solitons; distortionless propagation; fiber nonlinear directional coupler; fundamental soliton; high switching efficiency; input ports; output ports; signal pulse; signal soliton; Communication switching; Directional couplers; Fiber nonlinear optics; Optical distortion; Optical fiber couplers; Optical pulses; Optical refraction; Optical solitons; Routing; Switches;
Journal_Title :
Lightwave Technology, Journal of
