Optics Express

Cascaded optical resonator-based programmable photonic integrated circuits

Tae‐Won Park, Youngjae Jeong, Kyoungsik Yu

Published Jan 21, 2021• 5 citations

Abstract

Programmable photonic integrated circuits have mainly been developed based on the single wavelength channel operation of fundamental building blocks consisting of Mach-Zehnder interferometers (MZIs) with tunable phase shifters. We propose and study optical circuit models consisting of cascaded optical resonators that enable the independent operation of multiple wavelength channels in a more compact footprint than the conventional MZIs. By adopting experimental values reported for silicon micro-ring resonators, the fidelities of different types of 2×2 unitary transformations and higher-dimensional unitary transformations are examined by employing the Reck algorithm and the Clements algorithm.

DOI: 10.1364/oe.415545

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