Dielectric-gap-metal waveguides for THz low-loss propagating wave with subwavelength mode width

Hua-Wei Liang; Ying-xue Huang; Jia-Min Liu; Min Zhang; Hong Su

doi:10.1117/12.2199480

15 October 2015 Dielectric-gap-metal waveguides for THz low-loss propagating wave with subwavelength mode width

Hua-Wei Liang, Ying-xue Huang, Jia-Min Liu, Min Zhang, Hong Su

Proceedings Volume 9672, AOPC 2015: Advanced Display Technology; and Micro/Nano Optical Imaging Technologies and Applications; 96720J (2015) https://doi.org/10.1117/12.2199480
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

For a good THz waveguide, both low propagating loss and small mode width are usually very important. However, the high ohmic loss of metals and the high absorption loss of dielectric materials result in that it still remains a challenge to obtain the two capabilities at the same time. In this paper, planar dielectric-gap-metal (DGM) waveguides are presented to guide THz wave. According to the dispersion equations of the waveguides, we calculate their mode characteristics by numerical calculation, and we find that THz wave can propagate in the waveguides with low loss and simultaneously subwavelength mode width. When compared with the parallel-plate waveguide, the mode losses of the DGM waveguide can be 1-3 orders of magnitude lower, but the mode widths do not increase. The combination of low propagating loss and subwavelength mode width makes the DGM waveguides particularly useful for many THz applications such as sensing, communication, and imaging.

Citation Download Citation

Hua-Wei Liang, Ying-xue Huang, Jia-Min Liu, Min Zhang, and Hong Su "Dielectric-gap-metal waveguides for THz low-loss propagating wave with subwavelength mode width", Proc. SPIE 9672, AOPC 2015: Advanced Display Technology; and Micro/Nano Optical Imaging Technologies and Applications, 96720J (15 October 2015); https://doi.org/10.1117/12.2199480

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available