BLACK PHOSPHOROUS-LAYERED PHOTONIC CRYSTAL FIBER BASED PLASMONIC BIOSENSOR FOR REFRACTOMETRIC AND URINARY TRACT INFECTION SENSING

Abstract

This work proposes highly sensitive photonic crystal fiber based on surface plasmon resonance for sensing applications. The proposed sensors function as refractometric sensor, biosensors for detecting various diseases such as Urinary Tract infection, and cancer. All the proposed sensors are capable of detecting changes in refractive index in surroundings with an exceptional sensitivity. All the proposed fibers are simulated computationally by FEM using COMSOL Multiphysics Software. Various performance parameters were numerically analysed such as confinement loss, effective mode index, wavelength and amplitude sensitivity. With the proposed designs, high sensitivity and low confinement loss have been reported in the sensing range of RI of 1.3 to 1.4, which covers the refractive indices of most chemical and biological analytes, making it suitable for many sensing applications. The higher sensitivity magnitudes show that the proposed sensors are capable of detecting even small changes in the surrounding environment in terms of RI. Various fabrication techniques are also suggested which can be used for production of these sensors for real world applications