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A novel directional coupler utilizing a left-handed material

Sanshui Xiao·Linfang Shen·Sailing He
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Abstract

A novel directional coupler with a left-handed material (LHM) layer between two single-mode waveguides of usual material is introduced. The coupling system is analyzed with the supermode theory. It is shown that such a LHM layer of finite length can shorten significantly the coupling length for the two single-mode waveguides. A LHM layer with two slowly tapered ends is used to avoid the reflection loss at the ends.

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Sanshui Xiao, Linfang Shen, Sailing He. 2005-09-01. A novel directional coupler utilizing a left-handed material. https://doi.org/10.1109/lpt.2003.818950

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