Design and implementation of efficient terahertz waveguides

Description

In this thesis, novel broadband waveguides capable of operating at terahertz (THz) frequencies are introduced. We explore in detail the two-wire waveguide showing that it can have absorption as low as 0.01 cm-1, fairly good coupling efficiency, and is free from group-velocity dispersion (GVD). We also propose two low loss, planar slot-line structures for guiding THz waves. Rigorous theoretical analyses, numerical simulations, and experimental results are presented to evaluate and verify the performance of the waveguides at THz frequencies. We also present a tapered structure to couple effectively THz waves from a photoconductive source to a two-wire waveguide. Finally, practical structures to realize the first THz low-loss cable using the two-wire waveguide are introduced. / Graduate

Links & Downloads

1. http://hdl.handle.net/1828/3977
2. 1. H. Pahlevaninezhad, B. Heshamt, and T. E. Darcie, “Efficient terahertz slot-line waveguides,” Optics Express 19, 26, B47-B55, 2011.
3. 2. H. Pahlevaninezhad, T. E. Darcie, and B. Heshmat, “Two-wire waveguide for terahertz,” Optics Express 18, 7, 7415-7420, 2010.
4. 3. H. Pahlevaninezhad, and T. E. Darcie, “Coupling of terahertz waves to a two-wire waveguide,” Optics Express 18, 22, 22614-22624, 2010.
5. 4. H. Pahlevaninezhad, B. Heshmat, and T. E. Darcie, “Advances in terahertz waveguides and sources,” IEEE Photonic Journal, Breakthrough in Photonics 2010, 2011 (Invited paper).

Tags

Waveguide

Terahertz

Additional Fields

Identifer	oai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/3977
Date	03 May 2012
Creators	Pahlevaninezhad, Hamid
Contributors	Darcie, Thomas E.
Source Sets	University of Victoria
Language	English, English
Detected Language	English
Type	Thesis
Rights	Available to the World Wide Web