Solid-core photonic crystal fiber-based nanolayer glucose sensor

In this article, a solid-core photonic crystal fiber was developed to examine different concentrations and refractive indices of dissolved glucose in water and blood samples using surface plasmon resonance. A photonic crystal fiber with coated sensor model based on (gold and silver) nanolayer was proposed. The experimental results exhibit a sensitivity of 1943.43 nm/RIU and 1892.18 nm/RIU for samples with glucose concentrations in water ranging from 80 mg/dl to 600 mg/dl when PCF is coated with gold and silver nanofilm, respectively. It also exhibits wavelength sensitivity of 1114.164 nm/RIU and 1012.364 nm/RIU for glucose concentrations in blood serum at range from 89 mg/dl to 611 mg/dl using PCF coated with identical 50 nm thick gold and silver nanofilms, respectively. It is found that the maximum resolution of the proposed PCF was 3.3x10(-5).