Abstract
A terahertz polarization splitter based on a dual-elliptical-core polymer fiber is proposed and theoretically optimized. Dual-elliptical cores with subwavelength-scale diameters are independently suspended within a fiber, which not only support two orthogonal polarization modes, being single-mode guided with low absorption losses, but also allow them to switch from one core to the other, with different coupling lengths. As a consequence, the two polarizations can be easily separated by choosing a suitable transmission length at a desired operation frequency. The transmission modes, coupling lengths for x- and y-polarizations, as well as the performance of the proposed polarization splitter at a center-frequency of 0.6 THz are investigated and numerically analyzed. A 1.43 cm long splitter with an ultralow loss of 0.4 dB, a high extinction ratio better than and a bandwidth of 0.02 THz is achieved.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Shanshan Li, Hao Zhang, Yu Hou, Jinjun Bai, Weiwei Liu, and Shengjiang Chang
Appl. Opt. 52(14) 3305-3310 (2013)
Tongtong Zhao, Shuqin Lou, Xin Wang, Min Zhou, and Zhenggang Lian
Appl. Opt. 55(23) 6428-6434 (2016)
Vikas Kumar, R. K. Varshney, and Sunil Kumar
Appl. Opt. 59(7) 1974-1979 (2020)