‘Ultraslow-Light’ and Flipping Property of the Crisscrossed-assisted Coupled-Ring Reflector

Abstract

We report two new behaviors of the recently reported crisscross-coupled microring resonator structure, namely (i) ‘ultraslow light’ propagation under symmetric parameter conditions, and (ii) a “flipping property” in the group delay under asymmetric parameter conditions. These properties can be utilized in numerous optical-based applications.