Credits: 3 (3-0-0)
Description
Optical fiber, optical fiber sensors, characteristics and components of optical fiber sensors, Spectroscopic techniques, Modulation schemes; Physics of plasmons, Surface plasmons at semi-infinite metal-dielectric interface, Excitation of Surface plasmons, surface plasmon resonance (SPR) condition, Interrogation techniques; Theory of SPR based optical fiber sensors, N-layer model, excitation by meridional rays: on axis excitation, performance parameters: sensitivity, detection accuracy and figure of merit; SPR based sensing applications, refractive index and other analytes sensing, multichannel sensing, multianalyte sensing; Factors affecting performance of the sensor: fiber parameters, change of metal, high index dielectric material, probe design, Temperature and ionic fluid.