QUANTUM DOT-BASED PHOTODETECTORS FOR OPTICAL COMMUNICATION

Abstract

Quantum dot (QD)-based photodetectors have emerged as a transformative technology in the field of optical communication due to their unique size-tunable optical properties and enhanced carrier confinement. These nanostructured materials offer a high degree of design flexibility, broad spectral response, and compatibility with integrated photonic systems. This article reviews the working principles, fabrication strategies, and performance characteristics of QD-based photodetectors, with a particular focus on their applications in fiber-optic networks and high-speed communication systems. It also discusses recent advancements in material synthesis, device architecture, and integration with CMOS platforms. Challenges such as noise suppression, stability, and scalability are addressed, and future directions for quantum-dot-enabled optical communication technologies are outlined..