Modelling and numerical analysis of a fabrication-friendly PCF-based biosensor: Milk sensing

Abstract

This paper has modelled and numerically analyzed an inimitable hollow-core PCF-based biosensor. The modelled sensor comprises an elementary arrangement of circular holes. This biosensor is specifically designed to detect cow milk and camel milk efficiently. The sensor has been simulated and numerically analyzed in the THz band ranging from 1 to 2 THz. Numerical analysis unfolds multiple optical parameters considered as PCF-based sensors performance indices. The proposed sensor has maintained about 79.26%, 78.82%, and 77.23% relative sensitivity for cow milk, camel milk, and water, respectively, at the optimum point of 1.5 THz. The values of numerical apertures are 0.266, 0.2683, and 0.2768 at the same operating point for the same sequence of analytes. The proposed sensor has also shown negligible effective material and confinement loss. Besides, the use of only circular holes enhances the implementation feasibility of this model practicing the prevailing fabrication strategies.

Keywords

• PCF
• Milk sensor
• Hollow Core
• Feasible fabrication
• Sensitivity
• Biosensor