Graph model for multiple scattering in lithium niobate on insulator integrated photonic networks

TL;DR

This paper introduces a graph-based model for simulating multiple light scattering in large-scale lithium niobate integrated photonic networks, validated with experiments and enabling tunable disorder control.

Contribution

A novel graph model for multiple scattering in LNOI networks that is validated experimentally and allows for tunable scattering and disorder in large optical networks.

Findings

Model agrees with experimental data

Enables large-scale network simulation

Allows control of scattering properties

Abstract

We present a graph-based model for multiple scattering of light in integrated lithium niobate on insulator (LNOI) networks, which describes an open network of single-mode integrated waveguides with tunable scattering at the network nodes. We first validate the model at small scale with experimental LNOI resonator devices and show consistent agreement between simulated and measured spectral data. Then, the model is used to demonstrate a novel platform for on-chip multiple scattering in large-scale optical networks up to few hundred nodes, with tunable scattering behaviour and tailored disorder. Combining our simple graph-based model with material properties of LNOI, this platform creates new opportunities to control randomness in large optical networks.