@article{article_1755624, title={A Novel All-Optical Photonic Crystal Sensor for Petrochemical Liquid Detection}, journal={The Eurasia Proceedings of Science Technology Engineering and Mathematics}, volume={34}, pages={388–393}, year={2025}, DOI={10.55549/epstem.1755624}, author={Kouddad, Elhachemi and Chabani, Sououdi Boumediene and Hassani, Islam}, keywords={Petrochemical, Photonic crystal resonator, Sensors, Optical circuits}, abstract={In this study, we introduce a novel and innovative optical sensor based on photonic crystals
designed for the detection of petrochemical liquids. This device leverages the unique properties of photonic
crystals to provide exceptional sensitivity and measurement accuracy. The sensor comprises a square lattice of
gallium arsenide (GaAs) rods suspended in air and coupled to an optimized ring resonator. This compact
architecture, measuring only 274 μm², enables the sensor to be easily integrated into miniaturized systems. The
interaction of petrochemical liquids such as petrol, kerosene, or diesel with the sensor induces changes in its
optical properties. These variations, measured by analyzing the transmitted light, allow for the precise
identification and quantification of the substances present in the sample. This approach offers rapid and reliable
detection, opening up new prospects in industrial quality control, environmental monitoring, and safety. The
strengths of this sensor lie in its high sensitivity, enabling the detection of trace amounts of contaminants, and its
extremely short response time, ideal for real-time monitoring. Moreover, its fabrication relies on wellestablished processes, promising large-scale production at a competitive cost. The potential applications of this
sensor are numerous and could revolutionize detection methods in the petrochemical industry.}, publisher={ISRES Publishing}