Open AccessCascaded optical resonator-based programmable photonic integrated circuits
Author(s) -
Tae-Won Park,
Yoon-Su Jeong,
Kyoungsik Yu
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.415545
Subject(s) - resonator , photonic integrated circuit , photonics , electronic circuit , optics , astronomical interferometer , silicon photonics , footprint , integrated circuit , optoelectronics , computer science , physics , electronic engineering , interferometry , engineering , paleontology , quantum mechanics , biology
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.