All-optical memory based on the injection locking bistability of a two-color laser diode

TL;DR

This paper demonstrates an all-optical memory using injection locking bistability in a specially engineered two-color laser diode, achieving high contrast switching and analyzing its bifurcation structure.

Contribution

It introduces a novel all-optical memory based on injection locking bistability in a two-color laser, with detailed experimental and theoretical analysis.

Findings

Achieved 35 dB intensity contrast in switching

Identified unique bifurcation structure not present in single-mode systems

Demonstrated bistability between single mode and two-color equilibria

Abstract

We study the injection locking bistability of a specially engineered two-color semiconductor Fabry-Perot laser. Oscillation in the uninjected primary mode leads to a bistability of single mode and two-color equilibria. With pulsed modulation of the injected power we demonstrate an all-optical memory element based on this bistability, where the uninjected primary mode is switched with 35 dB intensity contrast. Using experimental and theoretical analysis, we describe the associated bifurcation structure, which is not found in single mode systems with optical injection.