IDR Logo

Please use this identifier to cite or link to this item: http://idr.iitbbs.ac.in/jspui/handle/2008/1070
Title: Metal wire waveguide based all plasmonic refractive index sensor for terahertz frequencies
Authors: Padhy P.
Sahu P.K.
Jha R.
Keywords: Amplitude sensitivity
Group velocity sensitivity
Sensor
Surface plasmon resonance
Terahertz
Waveguide
Issue Date: 2016
Citation: 5
Abstract: A terahertz refractive index sensor for liquid analytes consisting of a copper wire waveguide and co-axial layers of PMMA and PVDF is established numerically. The dispersion behavior of the fundamental core and surface mode and their phase matching has been demonstrated that clearly explains the working mechanism of the sensor. A core mode amplitude sensitivity of 59.9 for unit change in refractive index at 269.8 ?m is obtained for the proposed sensor. It has a large evanescent field penetration depth of 48 ?m at the phase matching point that can facilitate sensing of analyte refractive index further away from the interface. A definition for group velocity sensitivity is proposed which is then evaluated for the proposed sensor. The near dispersion free behavior of the sensor core mode except around the phase matching point gives it an excellent group velocity sensitivity of 128.9 for unit change in refractive index. � 2015 Published by Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.snb.2015.09.005
http://10.10.32.48:8080/jspui/handle/2008/1070
Appears in Collections:Research Publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.