In this study, we have proposed photonic crystal fiber based surface plasmon resonance sensor, where hexagonally arranged circular air holes surrounded the core of photonic crystal fiber. Gold has been placed on top surface as a metallic layer, while all the structure covered with analyte channel. Full Vectorial Finite Elimination Method has been used for analysing effective refractive index and confinement losses for proposed sensor. When refractive index of analyte channel changes, spectral interrogation and amplitude methods have been used for calculating the sensitivities and resolutions of offered sensor.