Design of Hexagonal Photonic Crystal Fiber with High Nonlinearity and Low Confinement Loss for Optical Coherence Tomography Application

In this paper, we have theoretically investigated hexagonal photonic crystal fiber (HPCF) for the application of optical coherence tomography (OCT). HPCF is designed using COMSOL Multiphysics software based on FEM. We have considered the periodic arrangement of air holes that is air in holes and silica is used as background material for designing the PCF. The proposed PCF shows very low confinement loss 0.1×10
^-3
db/km at 1.1μm wavelength and high nonlinearity γ=120 [w.km]
^-1
at 1.1 μm wavelength. This design also shows flattened dispersion from 0.9 μm to 0.95 μm, which is also used for laung haul data transmission application.