期刊
CHINESE PHYSICS B
卷 30, 期 11, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1674-1056/ac0e22
关键词
optical solitons; fiber lasers; domain wall soliton; pulse laser
资金
- National Natural Science Foundation of China [11874040, 11904327, 61905222]
- Foundation for Leading Talents of Minhang, Shanghai
- Specialized Research Fund for the Doctoral Program of Zhengzhou University of Light Industry [0170-13501050036]
The experimental observations demonstrate the generation of domain-wall solitary pulses using a net anomalous dispersion Er-doped fiber ring laser without polarization-selective elements. By adjusting the pump power and polarization state appropriately, both bright and dark solitons can stably co-exist in the cavity. The use of a thulium-doped fiber as the saturable absorber enables the laser to exhibit good stability, which may have a significant impact on improving pulse-laser design and expanding practical applications in optical sensing, optical communication, and soliton multiplexed systems.
We report experimental observations performed using a net anomalous dispersion Er-doped fiber ring laser without polarization-selective elements, highlighting the domain-wall solitary pulses generated under the incoherent polarization coupling. By adjusting the pump power and the polarization state appropriately, bright and dark solitons can stably co-exist in the cavity, both centered at 1562.16 nm with a 3-dB spectral width of similar to 0.15 nm and a repetition rate of 3.83 MHz. Moreover, the 0.8 mm long thulium-doped fiber (TDF) facilitated the mode-locking and self-starting of the laser. This is the first demonstration of a laser being used to generate bright and dark solitons synchronously while using TDF as the saturable absorber (SA). Except possessing the all-fiber structure, the laser exhibits good stability, which may have a significant influence on improvement of the pulse-laser design, and may broaden practical applications in optical sensing, optical communication, and soliton multiplexed systems.
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