Harmful food adulteration chemical sensor: an approach of PCF based technology
摘要
The study uses photonic crystal fiber with a hexahedron core encircled by a decagonal coating to identify dangerous food ingredients. Butyl acetate, sorbitol, and saccharine are analytes utilized in sensing. Five layers of airflow holes make up the sensor’s decagonal structure, which includes two levels of hexahedron circles in the center. COMSOL version 4.2 states that the finite element method (FEM) is used to construct sensors. The described PCF sensor showed high relative sensitivity of 89.45%, 91.15%, and 92.35%, respectively and minimal confinement loss (CL) are 5.05 × 10−8 dB/m, 6.20 × 10−8 dB/m, and 5.80 × 10−8 dB/m, respectively for three additives such as saccharine having an index of refraction of 1.550, sorbitol having an index of refraction of 1.375, and butyl acetate having an index of refraction of 1.394 respectively at 1 THz (terahertz) frequency spectrum. Most likely, the structure was created to optimize the interaction between the adulterant chemical and the directed light. This is usually accomplished in PCF sensors by adding air holes or microstructure patterns that allow the analyte to coat or penetrate the core/cladding region. For food adulteration detection, strong evanescent field overlaps with the target chemical increases sensitivity. Moreover, the total power fraction and the optimum zone are also established in the terahertz frequency range. The simple design of this PCF makes construction simple. Because of its reliable waveguiding characteristics, this sensor is suggested for the detection of potential food addictions. This idea will bring in a new era of terahertz sensing in the food industry, as there aren’t many PCF sensors for detecting food additives.