中国物理B ›› 2025, Vol. 34 ›› Issue (6): 64203-064203.doi: 10.1088/1674-1056/adc663

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Multi-wavelength and transversely mode-switchable fiber laser based on ring-core fiber Bragg grating

Ya-Jun Jiang(姜亚军)1,†, Yu-Hui Su(苏宇辉)1, Jia-Xin Gao(高嘉欣)1, Feng Zhou(周峰)2, Li-Qin Cheng(程丽琴)3, Kang-Wei Pan(潘康伟)1, Bin-Chuan Sun(孙镔传)1, Li Shen(申力)1, De-Xing Yang(杨德兴)1,‡, and Jian-Lin Zhao(赵建林)1,§   

  1. 1 Shaanxi Key Laboratory of Optical Information Technology, and Key Laboratory of Light-Field Manipulation and Information Acquisition of Ministry of Industry and Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China;
    2 Key Laboratory of Optoelectronic Technology & Systems of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China;
    3 Hi-Tech College of Xi'an University of Technology, Xi'an 713700, China
  • 收稿日期:2025-02-15 修回日期:2025-03-23 接受日期:2025-03-28 出版日期:2025-05-16 发布日期:2025-05-27
  • 通讯作者: Ya-Jun Jiang, De-Xing Yang, Jian-Lin Zhao E-mail:yjjiang@nwpu.edu.cn;dxyang@nwpu.edu.cn;jlzhao@nwpu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62075182) and the National Key Research and Development Program of China (Grant No. 2022YFB3207502).

Multi-wavelength and transversely mode-switchable fiber laser based on ring-core fiber Bragg grating

Ya-Jun Jiang(姜亚军)1,†, Yu-Hui Su(苏宇辉)1, Jia-Xin Gao(高嘉欣)1, Feng Zhou(周峰)2, Li-Qin Cheng(程丽琴)3, Kang-Wei Pan(潘康伟)1, Bin-Chuan Sun(孙镔传)1, Li Shen(申力)1, De-Xing Yang(杨德兴)1,‡, and Jian-Lin Zhao(赵建林)1,§   

  1. 1 Shaanxi Key Laboratory of Optical Information Technology, and Key Laboratory of Light-Field Manipulation and Information Acquisition of Ministry of Industry and Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China;
    2 Key Laboratory of Optoelectronic Technology & Systems of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China;
    3 Hi-Tech College of Xi'an University of Technology, Xi'an 713700, China
  • Received:2025-02-15 Revised:2025-03-23 Accepted:2025-03-28 Online:2025-05-16 Published:2025-05-27
  • Contact: Ya-Jun Jiang, De-Xing Yang, Jian-Lin Zhao E-mail:yjjiang@nwpu.edu.cn;dxyang@nwpu.edu.cn;jlzhao@nwpu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62075182) and the National Key Research and Development Program of China (Grant No. 2022YFB3207502).

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摘要： A multi-wavelength and transversely mode-switchable fiber laser based on a ring-core fiber Bragg grating (RCFBG) is proposed. Two RCFBGs with high and low reflectivity are inscribed using a femtosecond laser and the phase mask scanning technique, serving as the mirrors in an all-fiber laser linear resonator. Leveraging the polarization dependence of the RCFBG through side exposure, we can readily achieve switchable single-wavelength, dual-wavelength, or triple-wavelength laser outputs by adjusting the polarization controller (PC) inside the resonator. Additionally, three distinct modes, namely, cylindrical vector beam (CVB), fundamental and mixed modes, are successfully obtained in single-wavelength laser operation. Azimuthally or radially polarized lasers can be realized by tuning two PCs inside and outside the resonator while operating in CVB mode. This innovative multi-wavelength and transversely mode-switchable fiber laser based on RCFBGs holds significant potential for applications in wavelength division multiplexing and mode division multiplexing systems.

关键词: fiber laser, ring-core fiber, fiber Bragg grating, cylindrical vector beam

Abstract: A multi-wavelength and transversely mode-switchable fiber laser based on a ring-core fiber Bragg grating (RCFBG) is proposed. Two RCFBGs with high and low reflectivity are inscribed using a femtosecond laser and the phase mask scanning technique, serving as the mirrors in an all-fiber laser linear resonator. Leveraging the polarization dependence of the RCFBG through side exposure, we can readily achieve switchable single-wavelength, dual-wavelength, or triple-wavelength laser outputs by adjusting the polarization controller (PC) inside the resonator. Additionally, three distinct modes, namely, cylindrical vector beam (CVB), fundamental and mixed modes, are successfully obtained in single-wavelength laser operation. Azimuthally or radially polarized lasers can be realized by tuning two PCs inside and outside the resonator while operating in CVB mode. This innovative multi-wavelength and transversely mode-switchable fiber laser based on RCFBGs holds significant potential for applications in wavelength division multiplexing and mode division multiplexing systems.

Key words: fiber laser, ring-core fiber, fiber Bragg grating, cylindrical vector beam

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.81.Wg (Other fiber-optical devices) 06.60.Jn (High-speed techniques) 07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)