Abstract-A Low-Loss Terahertz Fiber With Crossed Rectangular Shaped Dielectric Strips

Zhu, Y.-F. ; School of Physics and Communication Electronics, Jiangxi Normal University & Key Laboratory of Optoelectronic and Telecommunication, Nanchang, P. R. China ; Chen, M.-Y. ; Wang, H.

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=7156175&filter%3DAND%28p_IS_Number%3A5741778%29

We present a design and investigation of a low-loss terahertz fiber consisting of crossed rectangular shaped dielectric strips and a supporting outer cladding. The core-guided mode can be effectively confined in the fiber core with a large portion of mode power distributed in air holes adjacent to the solid material, which results in a low absorption loss property of the fiber. Low dispersion transmission can be obtained due to the thinner dielectric strips. In addition, a high birefringence on a level of $10 ^{-2}$over a wide frequency range can be obtained by simply adopting crossed dielectric strips with different thicknesses.