Fast and slow light in zig-zag microring resonator chains

Abstract

We analyze fast and slow light transmission in a zig-zag microring resonator chain. This novel device permits the operation in both regimes. In the superluminal case, a new ubiquitous light transmission effect is found whereby the input optical pulse is reproduced in an almost simultaneous manner at the various system outputs. When the input carrier is tuned to a different frequency, the system permits to slow down the propagating optical signal. Between these two extreme cases, the relative delay can be tuned within a broad range.

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• Group Delay Control in Longitudinal Offset Coupled Resonator Optical Waveguides
• Electromagnetic Formalism of the Propagation and Amplification of Light