High birefringence, low loss, and flattened dispersion photonic crystal fiber for terahertz application<xref rid="cpb_28_11_118701fn1" ref-type="fn">*</xref><fn id="cpb_28_11_118701fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 11604260) and the Outstanding Youth Science Fund of Xi’an University of Science and Technology, China (Grant No. 2019YQ3-10).</p></fn>

High birefringence, low loss, and flattened dispersion photonic crystal fiber for terahertz application**

Project supported by the National Natural Science Foundation of China (Grant No. 11604260) and the Outstanding Youth Science Fund of Xi’an University of Science and Technology, China (Grant No. 2019YQ3-10).

Wang Dou-Dou^{1, †}, Mu Chang-Long¹, Kong De-Peng², Guo Chen-Yu¹

Plots of birefringence versus frequency for two different core structures and mode profiles of the (i) x- and (ii) y-polarized fundamental modes at 1 THz (Λ = 200 μm, t = 0.015Λ, core porosity = 55%).