Abstract
A novel hollow core photonic crystal fiber (PCF) is proposed for biochemical analyte detection in the terahertz regime. The prime objective of the work is to increase the sensitivity but other significant features like effective material loss, confinement loss, effective area, numerical aperture and dispersion have been thoroughly investigated over a wide bandwidth using COMSOL version 5.3. Numerical simulation shows that a maximum chemical sensitivity of 99.76% 99.44% and 99.39% can be obtained for benzene, water and methanol respectively at optimum operating conditions. The symmetry in design makes the proposed structure easily feasible to be fabricated using the existing fabrication technologies. Thus it is believed that the proposed PCF has the potential due to its higher sensitivity and lower effective material loss to uplift the standard of PCF sensors and open a new window in this field of research.
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