SOLID CORE PHOTONIC CRYSTAL FIBER AS A BLOOD SERUM SENSOR BASED ON SURFACE PLASMON RESONANCE
In this work, a biomedical fiber sensor constructed of solid core optical photonic crystal fiber (SC-PCF)was fabricated to investigate different concentrations and the refractive index of blood serum samples based on surface Plasmon Resonance(SPR).In this study, the proposed structure was created by coating the first end of the photonic crystal fiber with a gold layer of 60 nm thickness. The second end of the photonic crystal fiber was connected to the multi-mode fiber (MMF). The obtained results show effective sensing performances. The sensors properties were measured; as the sensitivity equal to (11.11 µm/RIU), Signal to noise ratio (SNR) equal to 0.05and figure of merit (FOM) equal to 18.51. The fabricated SC-PCF biosensor can be used to measure efficiently the change in wavelength resonance caused by changing the concentration and refractive index of chemical and biological targets.
Keywords: Photonic Crystal Fiber, Bio-Sensor, Surface Plasmon Resonance.