Control of Section-Asymmetry Crosstalk in DELTA beta-Reversal Directional Coupler Switches.
01 January 1986
The crosstalk caused by a slight axial misalignment of reversed- DELTA beta electrodes on directional coupler switches is investigated. We show that this crosstalk can be reduced or eliminated by use of independent voltage adjustment of the two electrode sections. The displacement must be maintained below 1.5% if the magnitudes of the two required voltages should not differ by more than 10%.