A miniaturized tuneable light source using a piezo-actuated Fabry-Pérot interferometer

In this study, we present a miniaturized, tuneable light source achieved through the integration of a piezo-actuated Fabry-Pérot Interferometer (FPI) with a broadband light source. Our experimental setup combines the tuneable FPI with a white light source, allowing us to investigate the spectral properties of the emitted light under varying applied voltages. We develop and validate a theoretical model to analyze the optical performance of the system, focusing on parameters such as transmission and spectral resolution. We explore the impact of thickness variations in the coated multilayer structure on the achievable spectral resolution. To enhance the versatility of our miniaturized light source, we propose a novel configuration that combines six distinct FPI modules. Our findings contribute to the advancement of compact, broadband, tuneable light sources, with potential applications in various fields such as spectroscopy, imaging, and optical sensing.