A High birefringence microstructure fiber with four big elliptical air holes is investigated by using the finite-difference frequency-domain (FDFD) method. Based on the numerical simulations, the influence of the air-hole size and pitch upon the mode birefringence is analyzed. The work may be helpful for the design and fabrication of high birefringence PCFs.
Ming Chen, Si-gang Yang, Fei-fe Yin, Hong-wei Chen, Shi-zhong Xie. Design of a new type high birefringence photonic crystal fiber[J]. Optoelectronics Letters,2008,4(1):19-22