Title :
Control of section-asymmetry crosstalk in Δβ-reversal directional coupler switches
Author :
Korotky, Steven K. ; McCaughan, L.
Author_Institution :
AT&T Bell Laboratories, Holmdel, USA
Abstract :
The crosstalk caused by a slight longitudinal misalignment of reversed-Δβ 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 are not to differ by more than 10%.
Keywords :
crosstalk; directional couplers; electro-optical devices; integrated optics; interference suppression; optical couplers; switches; crosstalk elimination; directional coupler switches; displacement; guided wave electrooptic directional couplers; independent voltage adjustment; integrated optics; reversed-Δβ electrodes; section-asymmetry crosstalk;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860838
