中国物理B ›› 2026, Vol. 35 ›› Issue (5): 54202-054202.doi: 10.1088/1674-1056/ae15f3

• • 上一篇    

Generation of wavelength-tunable, bound-state and noise-like pulses in an all-polarization-maintaining laser ring cavity based on nonlinear polarization evolution

Yazhou Shi(石亚洲), Ze Li(李泽), and Zhiguo Lv(吕志国)†   

  1. School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
  • 收稿日期:2025-08-15 修回日期:2025-10-08 接受日期:2025-10-22 发布日期:2026-04-24
  • 通讯作者: Zhiguo Lv E-mail:lvzhiguo@imu.edu.cn
  • 基金资助:
    Project supported by the Natural Science Foundation of Inner Mongolia Autonomous Region of China (Grant No. 2025MS01009), the National Natural Science Foundation of China (Grant No. 12164030), and Science and Technology Plan Projects of Inner Mongolia Autonomous Region of China (Grant No. 2023KYPT0012).

Generation of wavelength-tunable, bound-state and noise-like pulses in an all-polarization-maintaining laser ring cavity based on nonlinear polarization evolution

Yazhou Shi(石亚洲), Ze Li(李泽), and Zhiguo Lv(吕志国)†   

  1. School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China
  • Received:2025-08-15 Revised:2025-10-08 Accepted:2025-10-22 Published:2026-04-24
  • Contact: Zhiguo Lv E-mail:lvzhiguo@imu.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Inner Mongolia Autonomous Region of China (Grant No. 2025MS01009), the National Natural Science Foundation of China (Grant No. 12164030), and Science and Technology Plan Projects of Inner Mongolia Autonomous Region of China (Grant No. 2023KYPT0012).

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摘要： Wavelength-tunable fiber lasers are of great interest due to their ability to meet the needs of multiple wavelengths simultaneously. In this work, a tuned spectrum of 13 nm (1564.5–1577.5 nm) is obtained using the nonlinear polarization evolution (NPE) technique by adjusting the polarization controller (PC) to use six segments of polarization-maintaining (PM) fibers with specific splicing angles in an all-PM ring cavity. The output pulse characteristics are also measured, and the signal-to-noise ratio (SNR) is greater than 74 dB. A soliton pulse with a pulse width of about 469 fs is generated at a repetition frequency of 14.12 MHz, which demonstrates the excellent performance of the fiber laser. In addition, by changing the cavity parameters and adjusting the PC, bound states and noise-like pulses are generated in the six-segment structure. So far, the generation of these two types of pulses has not been reported in other PM NPE structured fiber lasers, and the formation mechanism may be related to the complex nonlinear interactions in mode-locked fiber lasers. Our work demonstrates the potential of the PM NPE structure for applications in broad spectral tuning as well as in the generation of multiple pulse types.

关键词: wavelength-tunable, nonlinear polarization evolution, bound states and noise-like pulses, mode-locking

Abstract: Wavelength-tunable fiber lasers are of great interest due to their ability to meet the needs of multiple wavelengths simultaneously. In this work, a tuned spectrum of 13 nm (1564.5–1577.5 nm) is obtained using the nonlinear polarization evolution (NPE) technique by adjusting the polarization controller (PC) to use six segments of polarization-maintaining (PM) fibers with specific splicing angles in an all-PM ring cavity. The output pulse characteristics are also measured, and the signal-to-noise ratio (SNR) is greater than 74 dB. A soliton pulse with a pulse width of about 469 fs is generated at a repetition frequency of 14.12 MHz, which demonstrates the excellent performance of the fiber laser. In addition, by changing the cavity parameters and adjusting the PC, bound states and noise-like pulses are generated in the six-segment structure. So far, the generation of these two types of pulses has not been reported in other PM NPE structured fiber lasers, and the formation mechanism may be related to the complex nonlinear interactions in mode-locked fiber lasers. Our work demonstrates the potential of the PM NPE structure for applications in broad spectral tuning as well as in the generation of multiple pulse types.

Key words: wavelength-tunable, nonlinear polarization evolution, bound states and noise-like pulses, mode-locking

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.60.-v (Laser optical systems: design and operation) 42.60.Fc (Modulation, tuning, and mode locking) 42.65.-k (Nonlinear optics)