Patent ID: 8718421

Claim:
An optical device, comprising: M loop resonators made with a first distribution of resonant frequencies around a central frequency ω 1 (M≧2), M loop resonators form a first super-ring; the optical device receiving incoming light and outputting modified light, wherein the output light characteristics are determined by the first super-ring characteristics, which are different from characteristics of a single loop resonator, further comprising: M loop resonators made with a second distribution of resonant frequencies around a central frequency ω 2 forming a second super-ring, (M≧2); the device outputting the signal, which is a time delayed version of the input signal (provided by a constant group delay of all wavelengths in the signal), wherein an output light signal is determined by both super-ring characteristics, which are different from characteristics of each single super-ring at ω 1 and ω 2 , wherein the second super-ring contains the same M number of rings as the first super-ring thus providing the same group delay characteristic as the first super-ring, but with the opposite sign of the group delay dispersion on the signal which is centered between ω 1 and ω 2 .