Optical Bistability in Vanadium Dioxide Photonic Crystals Engineered with One-Dimensional Fibonacci Sequences

In this study, we investigate optical bistability in one-dimensional photonic crystals using Fibonacci layer sequences. We introduce a novel approach by incorporating vanadium dioxide (VO₂) into these sequences, deposited on a glass substrate with a negative refractive index material. Our works reveal significant high transmission peaks in the microwave spectrum, characterized by both optical bistability and multistability. We explore the theoretical implications of various parameters, including the VO₂ filling fraction, layer thickness, and incidence angle, on light transmission within this novel structure. Additionally, we demonstrate how temperature and phase variations in the VO₂ layer can modulate transmission peak characteristics and induce optical bistability. These adaptable structures show considerable promise for developing optical devices with controlled transmission peaks, with potential applications ranging from optical switches to tunable microwave filters. The observation of optical bistability at critical transmission wavelengths in the microwave range represents a highly desirable outcome with broad implications.