Elimination of crosstalk in directional coupler switches |
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Authors: | DeJie Li |
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Institution: | (1) Department of Information Electronics, Tsinghua University, Beijing, China |
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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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