Abstract
In this work, a ring-bus-ring-bus system has been proposed and experimentally demonstrated on a silicon-on-insulator platform to exhibit electromagnetically induced transparency (EIT)-like effect. Significant EIT-like transmission is generated by the coherent interference between a radiant mode and a subradiant mode in the two ring resonators, which are both directly coupled and indirect coupled through an asymmetric tricoupler. Our structure is more flexible and simple compared to similar EIT systems. A model is established to describe the system based on coupled mode theory. EIT-like effect is observed experimentally, and the results show good agreement with the theoretical predictions.
© 2017 Optical Society of America
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