Title :
On the crosstalk of reversed-Δβ directional coupler switches
Author :
Findakly, Talal K. ; Leonberger, F.J.
Author_Institution :
United Technol. Res. Center, East Hartford, CT, USA
fDate :
1/1/1988 12:00:00 AM
Abstract :
Coupled-mode theory applied to reversed-Δβ parallel directional coupler switches with tapered-sections input and output waveguide predicts a residual crosstalk in the straight through (bar) state due to coupling within the tapered regions which could be as low as 10-15 dB. Complete switching to the cross state, however, can be achieved assuming ideal conditions. Means of reducing the crosstalk in the bar state using phase control are presented
Keywords :
crosstalk; optical communication equipment; optical couplers; optical losses; optical waveguides; switches; 10 to 15 dB; bar state; coupled-mode theory; cross state; crosstalk; input waveguide; output waveguide; parallel directional coupler switches; phase control; residual crosstalk; reversed-Δβ directional coupler switches; tapered regions; Directional couplers; Eigenvalues and eigenfunctions; Electrooptical waveguides; Optical coupling; Optical crosstalk; Optical switches; Optical waveguide components; Optical waveguides; Transmission line matrix methods; Voltage; Zero voltage switching;
Journal_Title :
Lightwave Technology, Journal of
