Ultra-sensitive terahertz photonic crystal fiber sensor for detection of tuberculosis

Abstract

Tuberculosis (TB), a contagious disease spread through bacteria Mycobacterium tuberculosis, be possibly most leading contagious and deadly illnesses globally. Tuberculosis exhibited the highest mortality rate among all single infections, surpassing that of HIV/AIDS. Timely identification is a crucial element in the management of patients and possesses the capability to boost the likelihood of enduring. Detecting systems should possess exceptional mobility, accuracy, rapid detection capabilities, and minimal losses. This study introduces an innovative biomedical PCF sensor that can precisely identify and differentiate several strains of tuberculosis bacteria. The sensor relies on the sensitivity of terahertz radiation and advanced PCF design to overcome the limitations of existing diagnostic techniques. The sensor specifically targets the distinct difficulties associated with tuberculosis detection, a significant worldwide health issue. The sensor that has been designed exhibits a high relative sensitivity (ranging from 99.72 % to 99.95 %) and minimal losses when compared to previous detectors incorporating PCF. The sensor being considered demonstrates a CL of 5.17 × 10⁻⁰³ cm⁻¹, an impressively minimal EML of 0.0010 cm⁻¹, and NA of 0.217. This sensing unit under consideration can function within the terahertz frequency range. Consequently, it serves as a valuable resource for healthcare providers, enhancing their diagnostic capabilities for prompt treatment and improved patient outcomes. Additionally, its compact size enables its use in time-sensitive scenarios.