Design and Numerical Analysis of a Novel Rectangular PCF (R-PCF)-Based Biochemical Sensor (BCS) in the THz Regime. (19th February 2021)

• Record Type: Journal Article
• Authors: Bulbul, Abdullah Al-Mamun; Kouzani, Abbas Z.; Mahmud, M. A. Parvez; Nahid, Abdullah-Al
• Other Names: Harun Sulaiman W. Academic Editor.
• Is Part Of: International journal of optics. Volume 2021(2021)
• Publication Date: 2021-02-19
• Subjects: Optics -- Periodicals; Optics; Periodicals; 535
• DOI: 10.1155/2021/5527724
• Languages: English
• ISSNs: 1687-9392

Abstract

Abstract : A novel PCF-based sensor has been presented in this paper to sense different chemicals and biocomponents. The proposed biochemical sensor (BCS) comprises a simple arrangement of rectangular holes. The competence of this BCS in detecting analytes is evaluated employing the full-vector finite element method (FEM). Performance metrics prove the competence of this BCS in sensing various analytes that have a refractive index in the range of 1.33–1.48. The proposed BCS shows ultralower values for both the bulk absorption and confinement loss. This BCS attains a maximum of about 95.82% relative sensitivity at 2.5 THz. Also, the dispersion for this sensor is only 0.12 ± 0.011 ps/THz/cm at the same point of interest. These results prove that the proposed BCS will play a key role in sensing toxic chemicals, illegal drugs, biocomponents, etc. Besides, the simple rectangle-based PCF structure ensures the feasibility of fabrication by practicing the existing fabrication strategies.