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Indium Antimonide (InSb) Cavity Resonators based on Planar Plasmonic Terahertz Waveguide

Published online by Cambridge University Press:  05 August 2013

Ranjana J. Shourie ,
M. N. Satyanarayan  and
G. Umesh
Ranjana J. Shourie*
Affiliation:
Optoelectronics Laboratory, Department of Physics, NITK Surathkal, Mangalore-575025Karnataka INDIA.
M. N. Satyanarayan*
Affiliation:
Optoelectronics Laboratory, Department of Physics, NITK Surathkal, Mangalore-575025Karnataka INDIA.
G. Umesh*
Affiliation:
Optoelectronics Laboratory, Department of Physics, NITK Surathkal, Mangalore-575025Karnataka INDIA.
*
1[email protected]
2[email protected]
3[email protected]
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Abstract

We present the studies of Terahertz (THz) Semiconductor-Insulator-Semiconductor (SIS) Planar Plasmonic waveguide of Indium Antimonide (InSb) with cavities along the waveguide acting as resonator. The Surface Plasmon Polariton (SPP) modes were confined in the SI interface and resonance behavior and filtering functionality of the device were demonstrated. The transmission characteristic of the structure depends on the interference effects between the SPP mode passing through the cavity and the one returning from the cavity. These effects were observed by studying the transmission from the SIS waveguide as a function of frequency and cavity length and proving analytically using the analogy with microwave transmission line network. Furthermore, we present the SIS cavity resonator’s transmission characteristics which vary with changes in the dielectric constant of the insulator region. Such a study was proposed to incorporate in the structure for sensing of biomolecules in THz region.

Keywords

optoelectronicsemiconductinginsulator
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1566: Symposium W – Piezoelectric Nanogenerators and Piezotronics , 2013 , mrss13-1566-ii09-19
Copyright
Copyright © Materials Research Society 2013 

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References

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