Coupled-resonator-induced transparency (CRIT) analysis of the crisscrossed coupled-ring reflector (X-CRR)

Abstract

We investigate and analyze the behavior of the reflected signal of the crisscrossed coupled-ring reflector (X-CRR) under the coupled-resonator-induced transparency (CRIT) condition. We show how the values of the ring-to-bus coupling parameters affect the (i) peak value and (ii) bandwidth of the resultant intensity profiles. Furthermore, we discuss the role of the ring-to-ring coupling parameter in tuning the peaks of these profiles. Lastly, we use a phasor diagram to analyze the general features of the complex electric field of X-CRR under CRIT. Then we compare it to its counterpart, the coupled-ring reflector (CRR). Finally, all these results suggest that X-CRR can be an alternative design for accessing output behaviors that are difficult, if not impossible, to obtain using the standard CRR.