Photonic crystal nanocavities structure: Characteristics and applications in non-linear optics

This paper investigates the structural characteristics of photonic crystal (PhC) nanocavities and their application in non-linear optics. By leveraging the unique ability of these nanocavities to confine light within tiny volumes, the study explores their capacity to enhance non-linear optical effects such as frequency conversion and optical switching. Key design strategies, including defect engineering and cavity resonance optimization, are discussed to illustrate how these structures amplify light-matter interactions. The paper also discusses practical applications as optical devices namely as optical modulator and photoreceiver. Finally, all-silicon transmission link has also been demonstrated. We successfully achieved 0.1 Gb/s all-silicon scheme transmission link at 5 m distance with ~ 10 μW.