Desired Control of Mutually Delay-Coupled Diode Lasers near Phase-flip Transition Regimes

TL;DR

This paper demonstrates zero-lag synchronization in delay-coupled diode lasers without relays, occurring near phase-flip transitions, with potential applications in secure optical communications and neural network modeling.

Contribution

It provides the first numerical evidence of relay-free zero-lag synchronization in diode lasers near phase-flip regimes, highlighting its robustness and potential applications.

Findings

Zero-lag synchronization occurs without relays.

Synchronization is observed near phase-flip transition regimes.

The phenomenon is robust and applicable to optical communications.

Abstract

We investigate zero-lag synchronization (ZLS) between delay-coupled diode lasers system with mutual optical injection in a face-to-face configuration. We observed numerical evidence of such ZLS without using any relay element or mediating laser. In addition, simulation also demonstrate that this kind of robust ZLS occurs around the phase flip transition regimes where in-phase and anti-phase oscillations coexist due to delayed coupling induced modulation of the phase-amplitude coupling factor {\alpha}. Our finding could be implemented in highly secured optical communication network as well as the understanding of the occurrence of such ZLS in the neural network functionality.