Abstract
We report a particular coupling phenomenon occurring in the directional coupler composed of two touching terahertz antiresonant reflecting hollow waveguides. Unlike conventional directional couplers where one even system mode and one odd system mode are excited, numerical results indicate that three (one even and two odd) system modes participate in the power transfer process at the antiresonant frequencies. As a result, the coupling length can be significantly reduced, and it is shown here to be less than 300 wavelengths.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
M. Mann, U. Trutschel, C. Wächter, L. Leine, and F. Lederer
Opt. Lett. 16(11) 805-807 (1991)
Jen-Tang Lu, Chih-Hsien Lai, Tzu-Fang Tseng, Hua Chen, Yuan-Fu Tsai, Yuh-Jing Hwang, Hung-chun Chang, and Chi-Kuang Sun
Opt. Express 19(27) 26883-26890 (2011)
Chih-Hsien Lai, Teng Chang, and Yi-Siang Yeh
Opt. Express 22(7) 8460-8472 (2014)