Abstract:
A perfectly circular lattice Photonic Crystal Fiber (PCF) based Surface Plasmon Resonance (SPR) sensor has been proposed in this thesis paper. The proposed sensor would be able to detect the unknown analytes by flowing through the metal surface or dripped on the outer surface of the metal layer. Photonic Crystal Fiber (PCF) based Surface Plasmon Resonance sensors have gained the popularity for detecting unknown analytes. Chemically stable active plasmonic material Gold (Au) and sensing layer are used outside the fiber structure to make a simple configuration. The investigation process has been carried out by using the finite element method (FEM) based commercial available software package COMSOL Multiphysics version 5.3.a.The proposed sensor shows maximum amplitude sensitivity of 1607 RIU-1 at refractive index 1.36. This PCF based sensor can sense the refractive indices ranges from 1.33-1.38. Furthermore, sensitivity of the sensor is investigated by varying the value of different parameters such as Au (Gold) layer thickness, Perfectly Matched Layer (PML) thickness and air-hole diameter. The proposed sensor can detect biological analytes because of its high sensitivity, improved sensing resolution and suitable linearity
