Detection of lung agents through rectangular hollow-core photonic crystal fiber

Hydrochloric Acid (HCL) and Methyl Bromide (MBX) are two lung agents which have a very harmful effect on the human nose, eyes, lung, etc. In this research, we present a rectangular core photonic crystal fiber (RCPCF) sensor to detect these lung agents in the terahertz (THz) regime and Zeonex is selected as a fiber material for its fascinating properties. Enlarged sensitivity is achieved by this presented model and we found the relative sensitivity of approximately 88.6% for HCL, 92.8% for MBX at frequency 1.7 THz. Also, we found the birefringence of 0.00265, the effective area of 294500 μm2, effective material loss (EML) of 0.0072 cm
^-1
and confinement loss of 4.39×10
^-13
cm
^-1
for this RCPCF sensor at frequency 1.7 THz. In addition, 3D printing and extrusion techniques are more preferable in order to fabricate this RCPCF sensor.