Highly birefringent elliptical-hole photonic crystal fiber with squeezed hexagonal lattice.
We propose a novel polarization-maintaining index-guiding photonic crystal fiber (PCF). It is composed of a solid silica core and a cladding with squeezed-hexagonal-lattice elliptical air holes. Using a full-vector finite-element method, we study the modal birefringence of the fundamental modes in such PCFs. Numerical result shows that very high modal birefringence with a magnitude of the order of 10(-2) around 1550 nm has been obtained. Furthermore, large normal dispersion appears over a wide range of wavelengths in both orthogonal polarizations.
Yue
Yang
Y
Institute of Modern Optics, Nankai University, Tianjin 300071, China. yueyang@mail.nankai.edu.cn
Kai
Guiyun
G
Wang
Zhi
Z
Sun
Tingting
T
Jin
Long
L
Lu
Yunfei
Y
Zhang
Chunshu
C
Liu
Jianguo
J
Li
Yan
Y
Liu
Yange
Y
Yuan
Shuzhong
S
Dong
Xiaoyi
X