The Non-reciprocity of Multi-mode Optical Directional Amplifier Realized by Non-Hermitian Resonator Arrays

TL;DR

This paper demonstrates multi-frequency non-reciprocal optical transmission using non-Hermitian resonator arrays, enabling advanced signal routing, noise prevention, and enhanced information processing in integrated photonic systems.

Contribution

It introduces a novel multi-mode, multi-frequency non-reciprocal optical system based on non-Hermitian resonator arrays with nonlinear effects, including dual-frequency transmission.

Findings

Achieved multi-frequency non-reciprocal transmission in resonator arrays

Constructed a directional cyclic amplifier with non-reciprocal units

Potential applications in optical control and integrated photonics

Abstract

In the present paper, a multi-frequency optical non-reciprocal transmission is first realized by using a non-Hermitian multi-mode resonator array.We find that the non-reciprocity can be used to route optical signals, to prevent the reverse flow of noise, and find that the multi-frequency can be used to enhance information processing. In terms of the Scully-Lamb model and gain saturation effect, we accomplish a dual-frequency non-reciprocal transmission by introducing nonlinearity into a linear array of four-mode resonators. For example, a directional cyclic amplifier is constructed with non-reciprocal units. As potential applications, the non-reciprocity optical systems can be employed in dual-frequency control, parallel information processing, photonic integrated circuits, optical devices and so on.