TY - JOUR
T1 - Dual hollow-core negative curvature fiber polarization beam splitter covering the O + E + S + C + L communication band
AU - Ni, Yueting
AU - Yuan, Jinhui
AU - Qiu, Shi
AU - Zhou, Guiyao
AU - Xia, Changming
AU - Zhou, Xian
AU - Yan, Binbin
AU - Wu, Qiang
AU - Wang, Kuiru
AU - Sang, Xinzhu
AU - Yu, Chongxiu
N1 - Funding information: Research funded by National Natural Science Foundation of China (61935007).
PY - 2022/9/1
Y1 - 2022/9/1
N2 - In this paper, a dual hollow-core negative curvature fiber is proposed for the polarization beam splitter. The effects of the structure parameters of the dual hollow-core negative curvature fiber on the coupling length and coupling length ratio of the x -polarized and y -polarized core modes and the higher-order mode extinction ratio are analyzed by the finite element method. Moreover, the normalized output powers of the x -polarized and y -polarized modes in the cores A and B and the corresponding extinction ratio are also investigated by the mode coupling theory. The simulation results show that a dual hollow-core negative curvature fiber polarization beam splitter with the length of 6.45 cm can achieve a broad bandwidth of 400 nm (1.23–1.63 µm), covering the O + E + S + C + L communication band. In addition, the higher-order mode extinction ratio is greater than 100 in the considered wavelength range, which means that it has good single-mode characteristics. It is believed that the proposed dual hollow-core negative curvature fiber polarization beam splitter will have significant applications in the optical communication system.
AB - In this paper, a dual hollow-core negative curvature fiber is proposed for the polarization beam splitter. The effects of the structure parameters of the dual hollow-core negative curvature fiber on the coupling length and coupling length ratio of the x -polarized and y -polarized core modes and the higher-order mode extinction ratio are analyzed by the finite element method. Moreover, the normalized output powers of the x -polarized and y -polarized modes in the cores A and B and the corresponding extinction ratio are also investigated by the mode coupling theory. The simulation results show that a dual hollow-core negative curvature fiber polarization beam splitter with the length of 6.45 cm can achieve a broad bandwidth of 400 nm (1.23–1.63 µm), covering the O + E + S + C + L communication band. In addition, the higher-order mode extinction ratio is greater than 100 in the considered wavelength range, which means that it has good single-mode characteristics. It is believed that the proposed dual hollow-core negative curvature fiber polarization beam splitter will have significant applications in the optical communication system.
UR - https://www.scopus.com/pages/publications/85141276303
U2 - 10.1364/josab.465791
DO - 10.1364/josab.465791
M3 - Article
SN - 0740-3224
VL - 39
SP - 2493
EP - 2501
JO - Journal of the Optical Society of America B
JF - Journal of the Optical Society of America B
IS - 9
ER -