Toxic Chemicals Detection using Photonic Crystal Fiber in THz Regime

Toxic chemicals are not only destructive for the world but also highly harmful for all living beings. However, these chemicals have a wide range of household and industrial applications. So, their controlled and precise use must be ensured. Strychnine, Potassium Cyanide, and Sodium Cyanide are highly toxic chemicals that may cause severe harm, even death, to human. Detection of these chemicals, maintaining safety, is a burning need. PCF offers a wide range of chemical sensing application possibilities. We have presented a PCF based toxic chemical sensor model in this paper. The sensor is specially modelled to detect Strychnine, Potassium Cyanide, and Sodium Cyanide. The proposed model offers approximately 84.52%, 88.64%, and 96.76% relative sensitivity for Potassium Cyanide, Sodium Cyanide and Strychnine respectively at 1.0 THz in x-polarization direction. Besides, the model preserves satisfactory values for the effective material and confinement loss as well as standard value for the effective area. Moreover, this sensor may be fabricated, practicing existing schemes of fabrication.