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|Title:||A novel approach for spectroscopic chemical identification using photonic crystal fiber in the terahertz regime|
|Citation:||IEEE Sensors Journal, 2018; 18(2):575-582|
|Md. Saiful Islam, Jakeya Sultana, Kawsar Ahmed, Mohammad Rakibul Islam, Alex Dinovitser, Brian Wai-Him Ng and Derek Abbott|
|Abstract:||A novel highly sensitive porous core-photonic crystal fiber (PC-PCF) has been designed and analyzed for detection of chemical analytes in the terahertz frequency range. The PC-PCF is designed using rectangular structured air holes in the core with a kagome structured cladding. The full vectorial finite-element method is used to tune the geometrical parameters and to characterize the fiber. Our results demonstrate a high relative chemical sensitivity with significantly lower confinement loss for different analytes. Moreover, the PCF shows near zero dispersion variation, high modal effective area, high birefringence, and high numerical aperture. The practical realization of the fiber is feasible with present fabrication techniques. Our optimized PCF has commercial applications in chemical sensing as well as applications in terahertz systems that require guided polarization preserving transmission.|
|Keywords:||Sensor; terahertz; confinement loss; numerical aperture; photonic crystal fiber; birefringence; dispersion|
|Rights:||© 2018, IEEE|
|Appears in Collections:||Electrical and Electronic Engineering publications|
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