Surface plasmon polariton refractive index sensor based on photonic crystal fiber
Paper ID : 1191-ICNS
Nima Tourinezhad1, Mina Noori *2, Amin Abbasiyan2
1Sahand university of technoligy
2Sahand University of Technology
Here, a surface plasmon resonance sensor has been introduced for analyte detection having refractive indices in the range of n=1.35-1.4. The presented sensor is based on photonic crystal fiber composed of two rings with hexagonal and circular patterns in the 1st and the 2nd rings, respectively with outer cladding of gold. Holes with reduced diameter in either side of the core assist the coupling of the core guided mode to the surface plasmon polariton provided that the phase matching condition is fulfilled. The resonance condition is highly affected by the analyte refractive index which provides the detection mechanism. The presented sensor provides maximum resolution of 7.46×10-6 RIU. Also, the maximum amplitude and wavelength sensitivities of 545 RIU-1 and 13400 nm/RIU have been obtained for the proposed sensor, respectively. The numerical analysis has been carried out by the FEM in COMSOL Multiphysics software and the outcomes indicate that the presented structure has potential applications in bio and chemical sensing.
Surface plasmon polariton, photonic crystal fiber, Refractive index sensor, FEM.
Status : Abstract Accepted (Poster Presentation)