Dynamic Nonreciprocity with a Kerr Nonlinear Resonator

TL;DR

This paper proposes a theoretical method to achieve on-chip optical isolators and circulators with dynamic nonreciprocity using Kerr nonlinear resonators, advancing integrated photonic device capabilities.

Contribution

It introduces a novel approach for dynamic nonreciprocity in Kerr nonlinear resonators, overcoming limitations of traditional nonlinear optical isolators.

Findings

Achieves dynamic nonreciprocity via chiral modulation of resonance frequency.

Utilizes coexisting self- and cross-Kerr nonlinearities.

Provides a theoretical framework for integrated optical isolation.

Abstract

On-chip optical nonreciprocal devices are vital components for integrated photonic systems and scalable quantum information processing. Nonlinear optical isolators and circulators have attracted considerable attention because of their fundamental interest and their important advantages in integrated photonic circuits. However, optical nonreciprocal devices based on Kerr or Kerr-like nonlinearity are subject to dynamical reciprocity when the forward and backward signals coexist simultaneously in a nonlinear system. Here, we theoretically propose a method for realizing on-chip nonlinear isolators and circulators with dynamic nonreciprocity. Dynamic nonreciprocity is achieved via the chiral modulation on the resonance frequency due to coexisting self- and cross-Kerr nonlinearities in an optical ring resonator. This work showing dynamic nonreciprocity with a Kerr nonlinear resonator can be an essential step toward integrated optical isolation.