Application of pairs of coupled microresonators for control of optical radiation: theoretical analysis

Abstract

The paper presents an analysis of optical delay lines based on coupled ring microresonators. The introduced optical delay is caused by realization of a slow light mode in a system with high Q-factor. Using the method of slowly varying amplitudes, a theoretical analysis was carried out and an equation for the transfer function of the system under consideration was obtained. Using numerical simulation, the possibility of controlling the introduced delay and attenuation of the delayed signal was investigated. It follows from the numerical simulation that the proposed system of coupled resonators allows to change the delay in the range from 165 ps to 629 ps for a transmitted signal with a frequency band up to 300 MHz with a maximum attenuation of the delayed signal –4.7 dB.