Cyanide Detection with PCF in the THz Region: Composition and Performance Perusal

A complete numerical investigation along with the design mechanism of a rectangular-shaped hollow-core photonic crystal fiber (RH-PCF) is highlighted in this article. This RH-PCF is capable of operating to the THz regime for the purpose of detecting cyanides namely NaCN, KCN, and HCN. The incident light is guided towards the core region by using the finer arrangements of cladding air holes. An anti-reflecting layer of $150 {\mu} \mathrm{m}$ is used for restricting the scattering of lights from the sensor. The designed sensor represents a higher sensitivity of 93% for NaCN, and a larger N <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">A</inf> of 0.2035 for KCN. Besides, a lower A eff of 2.85 ×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sup> $\mu$ m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and lessened EML…