Programmable Photonic Circuit for Optical Logic Operations and 2-Bit Decoding
Optics
2026-02-23 v2
Abstract
We present a programmable silicon photonic circuit composed of cascaded multiport directional couplers interleaved with thermo-optic phase shifters. The device forms a reconfigurable interferometric network capable of realizing arbitrary unitary transformations. By tuning the phase shifters, the same circuit can be configured to perform both optical logic gates and 2-bit decoding functions. Optimal phase settings are determined through Bayesian optimization. The circuit maintains stable operation across multiple wavelengths with 50 GHz spacing, suggesting potential for wavelength-parallel optical processing. These results highlight a pathway toward programmable and integrated photonic circuits.
Cite
@article{arxiv.2509.20825,
title = {Programmable Photonic Circuit for Optical Logic Operations and 2-Bit Decoding},
author = {Noel Francisco Prado Bucaro and Yushan Hu and Satoshi Sunada and Takeo Maruyama},
journal= {arXiv preprint arXiv:2509.20825},
year = {2026}
}