Theoretical analysis and numerical verif
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Wenquan Che; Lei Xu; Shiwei Dong; Peter Russer
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Article
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2008
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John Wiley and Sons
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English
⚖ 261 KB
## Abstract The waveguide‐type directional couplers constructed into double‐layer thin dielectric substrates have been investigated in this article. Based on coupling theory, the theoretical formulas of coupling factor and isolation for directional couplers with two different coupling structures ha