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Elimination of crosstalk in directional coupler switches
Authors:DeJie Li
Institution:(1) Department of Information Electronics, Tsinghua University, Beijing, China
Abstract:We propose a tapered electrode structure to make the ratio of the coupling coefficient to the difference of propagation constants between two coupled waveguides in a directional coupler switch a constant throughout it. In this way, the crosstalk caused by the existence of tapered sections is entirely eliminated.
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