Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber

doi:10.1088/1674-1056/ac3a63

中国物理B ›› 2022, Vol. 31 ›› Issue (5): 54215-054215.doi: 10.1088/1674-1056/ac3a63

Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber

Yongtao Li(李永涛), Jiesong Deng(邓洁松), Zhen Yang(阳圳), Hui Zou(邹辉), and Yuzhou Ma(马玉周)

1 Academic Affairs Office, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
3 State Key Laboratory of Luminescence and Applications, Changchun 130033, China;
4 Beijing Times Photoelectric Technology Co., Ltd, Beijing 100094, China

收稿日期:2021-07-28 修回日期:2021-10-27 出版日期:2022-05-14 发布日期:2022-04-09
通讯作者: Hui Zou,E-mail:zouhui1010@163.com E-mail:zouhui1010@163.com
基金资助:
Project supported by the State Key Laboratory of Luminescence and Applications (Grant No.SKLA-2020-01).

Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber

Yongtao Li(李永涛)¹, Jiesong Deng(邓洁松)², Zhen Yang(阳圳)², Hui Zou(邹辉)^†^2,3,†, and Yuzhou Ma(马玉周)⁴

1 Academic Affairs Office, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
2 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China;
3 State Key Laboratory of Luminescence and Applications, Changchun 130033, China;
4 Beijing Times Photoelectric Technology Co., Ltd, Beijing 100094, China

Received:2021-07-28 Revised:2021-10-27 Online:2022-05-14 Published:2022-04-09
Contact: Hui Zou,E-mail:zouhui1010@163.com E-mail:zouhui1010@163.com
About author:2021-11-17
Supported by:
Project supported by the State Key Laboratory of Luminescence and Applications (Grant No.SKLA-2020-01).

摘要/Abstract

摘要： A novel ultra-broadband polarization splitter based on a dual-core photonic crystal fiber (DC-PCF) is designed. The full-vector finite element method and coupled-mode theory are employed to investigate the characteristics of the polarization splitter. According to the numerical results, a graphene-filled layer not only broadens the working bandwidth but also reduces the size of the polarization splitter. Furthermore, the fluorine-doped region and the germanium-doped region can broaden the bandwidth. Also, the 4.78 mm long polarization splitter can achieve an extinction ratio of -98.6 dB at a wavelength of 1550 nm. When extinction ratio is less than -20 dB, the range of the wavelength is 1027 nm-1723 nm with a bandwidth of 696 nm. Overall, the polarization splitter can be applied to all-optical network communication systems in the infrared and near-infrared wavelength range.

关键词: photonic crystal fiber, polarization splitter, broadband bandwidth, extinction ratio

Abstract: A novel ultra-broadband polarization splitter based on a dual-core photonic crystal fiber (DC-PCF) is designed. The full-vector finite element method and coupled-mode theory are employed to investigate the characteristics of the polarization splitter. According to the numerical results, a graphene-filled layer not only broadens the working bandwidth but also reduces the size of the polarization splitter. Furthermore, the fluorine-doped region and the germanium-doped region can broaden the bandwidth. Also, the 4.78 mm long polarization splitter can achieve an extinction ratio of -98.6 dB at a wavelength of 1550 nm. When extinction ratio is less than -20 dB, the range of the wavelength is 1027 nm-1723 nm with a bandwidth of 696 nm. Overall, the polarization splitter can be applied to all-optical network communication systems in the infrared and near-infrared wavelength range.

Key words: photonic crystal fiber, polarization splitter, broadband bandwidth, extinction ratio

中图分类号: (Fiber waveguides, couplers, and arrays)

42.81.Qb

42.79.Fm (Reflectors, beam splitters, and deflectors) 42.68.Mj (Scattering, polarization)

Yongtao Li(李永涛), Jiesong Deng(邓洁松), Zhen Yang(阳圳), Hui Zou(邹辉), and Yuzhou Ma(马玉周). Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber[J]. 中国物理B, 2022, 31(5): 54215-054215.

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Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber

Design of a polarization splitter for an ultra-broadband dual-core photonic crystal fiber

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