Design approach of solid-core photonic crystal fiber sensor with sensing ring for blood component detection

The solid-core photonic crystal fiber (PCF) sensor with circular sensing ring has been proposed for biochemical detection. Finite-element method-based numerical technique has been applied to solve Maxwell's equations with perfect matched boundary conditions. The relative sensitivity and confinement losses are two performance parameters of PCF sensor for blood component detection. In the proposed design, the circular sensing ring over solid core is filled with different blood components and light propagates inside the core region. The evanescent field of core mode uniformly interacts with sensing liquids. The sensing ring is preferred over the multiple air holes because of easy liquid infiltration and fabricated for biosensing applications.