Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

doi:10.1088/1674-1056/ac9a37

中国物理B ›› 2023, Vol. 32 ›› Issue (2): 24205-024205.doi: 10.1088/1674-1056/ac9a37

Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

Lianzhen Zhang(张连震), Xuedian Zhang(张学典)^†, Xiantong Yu(俞宪同), Xuejing Liu(刘学静), Jun Zhou(周军), Min Chang(常敏), Na Yang(杨娜), and Jia Du(杜嘉)

Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, University of Shanghai for Science and Technology, Shanghai 200093, China

收稿日期:2022-08-07 修回日期:2022-10-04 接受日期:2022-10-14 出版日期:2023-01-10 发布日期:2023-01-31
通讯作者: Xuedian Zhang E-mail:xdzhang@usst.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China “National Quality Infrastructure” (Grant No. 2021YFF0600902).

Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

Lianzhen Zhang(张连震), Xuedian Zhang(张学典)^†, Xiantong Yu(俞宪同), Xuejing Liu(刘学静), Jun Zhou(周军), Min Chang(常敏), Na Yang(杨娜), and Jia Du(杜嘉)

Key Laboratory of Optical Technology and Instrument for Medicine, Ministry of Education, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2022-08-07 Revised:2022-10-04 Accepted:2022-10-14 Online:2023-01-10 Published:2023-01-31
Contact: Xuedian Zhang E-mail:xdzhang@usst.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China “National Quality Infrastructure” (Grant No. 2021YFF0600902).

摘要/Abstract

摘要： The research of high-performance polarization controllers is of great significance for expanding the application field of polarization optics. Here, a polarization switch is demonstrated by using a dual-core photonic crystal fiber (DCPCF) with four symmetrical air holes, placed above and below each core, filled with magnetic fluid (MF). The switch, which utilizes a magnetic field to change the coupling length ratio of the x and y polarization modes, enables dynamic tuning of the polarization state and extinction ratio. Numerical results show that when the working length is 36.638 mm, the magneto-optical polarization switch can operate in four communication bands, i.e., 1509 nm to 1520 nm, 1544 nm to 1556 nm, 1578 nm to 1591 nm, and 1611 nm to 1624 nm. Moreover, the extinction ratio (ER) is greater than 20 dB in the fiber length range of 38.5 mm to 38.7 mm, indicating that the device has a good fault tolerance for the interception of the fiber length.

关键词: polarization switch, magnetic fluid, dual-core photonic crystal fiber

Abstract: The research of high-performance polarization controllers is of great significance for expanding the application field of polarization optics. Here, a polarization switch is demonstrated by using a dual-core photonic crystal fiber (DCPCF) with four symmetrical air holes, placed above and below each core, filled with magnetic fluid (MF). The switch, which utilizes a magnetic field to change the coupling length ratio of the x and y polarization modes, enables dynamic tuning of the polarization state and extinction ratio. Numerical results show that when the working length is 36.638 mm, the magneto-optical polarization switch can operate in four communication bands, i.e., 1509 nm to 1520 nm, 1544 nm to 1556 nm, 1578 nm to 1591 nm, and 1611 nm to 1624 nm. Moreover, the extinction ratio (ER) is greater than 20 dB in the fiber length range of 38.5 mm to 38.7 mm, indicating that the device has a good fault tolerance for the interception of the fiber length.

Key words: polarization switch, magnetic fluid, dual-core photonic crystal fiber

中图分类号: (Polarization)

42.25.Ja

42.81.-i (Fiber optics) 42.81.Gs (Birefringence, polarization) 42.81.Wg (Other fiber-optical devices)

Lianzhen Zhang(张连震), Xuedian Zhang(张学典), Xiantong Yu(俞宪同), Xuejing Liu(刘学静), Jun Zhou(周军), Min Chang(常敏), Na Yang(杨娜), and Jia Du(杜嘉). Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber[J]. 中国物理B, 2023, 32(2): 24205-024205.

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Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

Multi-band polarization switch based on magnetic fluid filled dual-core photonic crystal fiber

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