paper 150205131109

Published: 2015-07-09

Enhanced Group Velocity Characteristics of a ENG Cladded Metamaterial Loaded Helical Guide

Surya Kumar Pathak,

Surya Kumar Pathak

Institute for Plasma Research, India

Homepage

Dushyant Kumar Sharma

Institute for Plasma Research, India

Homepage

Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)486-488

Abstract

In this paper, we propose an ENG Cladded Metamaterial Loaded Helical (CMLHG) waveguide structure, to achieve enhance slow wave in THz frequency spectrum. Both analytical as well as numerical computation has been done to explore the dispersion behavior of the struc- ture. It is observed that the waveguide supports propagation of forward wave (FW) mode having parallel phase and group velocities over a wide bandwidth with an enhanced slow wave charac- teristic. A comparative study of slow wave behavior has been done between the ENG CMLHG waveguide and two other cases (i) when helix is in free space and (ii) when helix is cladded with DPS material and loaded with metamaterial. It is found that present structure supports slower wave as compared to those structures.

Citation

Surya Kumar Pathak, and Dushyant Kumar Sharma, "Enhanced Group Velocity Characteristics of a ENG Cladded Metamaterial Loaded Helical Guide," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)486-488

References

1. Veselago, V. G., "The electrodynamics of substances with simultaneo-usly negative value of ε and µ," Sov. Phys. Usp., Vol. 10, 509, 1968.
doi:10.1070/pu1968v010n04abeh003699 Google Scholar

2. Shelby, R. A., D. R. Smith, and S. Schultz, "Experimental verification of a negative index of refraction," Science, Vol. 292, 77-79, 2001.
doi:10.1126/science.1058847 Google Scholar

3. Bait-Suwailam, M. M. and Z. Chen, "Surface-wave along double-negative (DNG) slab waveguide," Microwave and Optical Technology Letters, Vol. 44, 494-498, 2003. Google Scholar

4. Gennaro, E. D., P. V. Parimi, W. T. Lu, and S. Sridhar, "Slow microwaves in left-handed materials," Phy. Rev. B, Vol. 72, 033110, 2005.
doi:10.1103/physrevb.72.033110 Google Scholar

5. Savo, S., B. D. Casse, L. Wentao, and S. Sridhar, "Observation of slow-light in a metamaterials waveguide at microwave frequencies," Applied Physics Letters, Vol. 98, 171907, 2011.
doi:10.1063/1.3583521 Google Scholar

6. Erfaninia, H. and A. Rostami, "Group velocity reduction in multilayer metamaterial waveguide," Optik, Vol. 124, No. 10, 1230-1233, 2013.
doi:10.1016/j.ijleo.2012.03.001 Google Scholar

7. Sharma, D. K. and S. K. Pathak, "Ultra slow EM wave propagation characteristics of lefthanded material loaded helical guide," Progress In Electromagnetics Research M, Vol. 35, 11-19, 2014.
doi:10.2528/pierm14010102 Google Scholar