Quasi-Photonic Crystal Fiber-Based Spectroscopic Chemical Sensor in the Terahertz Spectrum: Design and Analysis

In this paper, a novel microstructure quasi-photonic crystal fiber design is proposed. Aimed at a high relative sensitivity, it is targeted for chemical sensing applications in the terahertz regime. A rigorous full-vector finite element method-based numerical investigation has been applied by employ...

Full description

Saved in:
Bibliographic Details
Published inIEEE sensors journal Vol. 18; no. 24; pp. 9948 - 9954
Main Authors Paul, Bikash Kumar, Ahmed, Kawsar, Vigneswaran, Dhasarathan, Ahmed, Fahad, Roy, Subrata, Abbott, Derek
Format Journal Article
LanguageEnglish
Published New York IEEE 15.12.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Benzene
Chemical sensors
Crystal fibers
Ethanol
Finite element method
Indexes
Liquid sensor
Numerical aperture
Optical losses
Optical refraction
Optical sensors
Optical waveguides
Organic chemistry
Parameter sensitivity
Perfectly matched layers
Photonic crystals
quasi photonic crystal fiber
Sensitivity
terahertz
Online AccessGet full text

Cover

More Information
Summary:In this paper, a novel microstructure quasi-photonic crystal fiber design is proposed. Aimed at a high relative sensitivity, it is targeted for chemical sensing applications in the terahertz regime. A rigorous full-vector finite element method-based numerical investigation has been applied by employing an anisotropic perfectly matched layer for optimizing key parameters. Improved relative sensitivity responses of 78.8%, 77.8%, and 69.7% are achieved for targeted analytes ethanol, benzene, and water, respectively, at the operating frequency of f =1.3 THz. Moreover, confinement loss, effective area, power fraction, and numerical aperture are analyzed from 0.8 to 2.0 THz.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2018.2872892