Layered THz waveguides for SPPs, filter and sensor applications

Theory of five kinds of layered structure THz waveguides is presented. In these waveguides, the modified and hybrid THz surface plasmon-polaritons (SPPs) are researched in detail. On these modes, the effects of material in each layer are discussed. The anti-resonant reflecting mechanism is also disc...

Full description

Saved in:
Bibliographic Details
Published in:Journal of optics (New Delhi) 2019-12, Vol.48 (4), p.567-581
Main Authors: Liu, Jiamin, Khan, Zia Ullah, Sarjoghian, Siamak
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Polaritons
Refractivity
Research Article
Sensors
Waveguides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Theory of five kinds of layered structure THz waveguides is presented. In these waveguides, the modified and hybrid THz surface plasmon-polaritons (SPPs) are researched in detail. On these modes, the effects of material in each layer are discussed. The anti-resonant reflecting mechanism is also discussed in these waveguides. The mode characteristics of both TM mode and TE mode are analyzed for guiding TM mode with low loss and TE modes with huge loss in one waveguide: the TE modes filter application is put forward. The mode characteristics for one waveguide have useful sensor applications: for TE 1 mode, we find that the low cut-off frequency has a sensitivity ( S ) to the refractive index of the dielectric slab. The highest S can be 666.7 GHz/RIU when n 2  = 1.5, w  = 0 and t  = 0.1 mm. We believe these results are very useful for designing practical THz devices for SPPs, filter and sensor applications.
ISSN:0972-8821
0974-6900
DOI:10.1007/s12596-019-00569-3