Huang Qianqian, Zou Chuanhang, Mou Chengbo, Guo Xi, Yan Zhijun, Zhou Kaiming, Zhang Lin
Opt Express. 2019 Jul 8;27(14):20028-20036. doi: 10.1364/OE.27.020028.
Via careful choice of Er-doped fiber length in the cavity, a widely wavelength-tunable L-band dissipative soliton all-fiber Er-doped laser incorporating a L-band optimized polarizing fiber grating device is experimentally demonstrated. The laser delivers 15.38 ps dissipative soliton pulses centered at 1597.34 nm with 3 dB bandwidth of 34.6 nm under 622 mW pump power. The pulse repetition rate is 23 MHz. After using single mode fiber at external cavity, the pulse duration is compressed to 772 fs. With nonlinear polarization rotation-based intracavity comb filter, the central wavelength of the generated dissipative soliton can be tuned from 1567 nm to 1606 nm with a spectral tuning range of 39 nm, which, to the best of our knowledge, is the widest tuning range yet reported for a dissipative soliton fiber laser working in communication band.
通过精心选择腔内掺铒光纤的长度，实验展示了一种结合了L波段优化偏振光纤光栅器件的宽波长可调谐L波段耗散孤子全光纤掺铒激光器。在622 mW泵浦功率下，该激光器输出中心波长为1597.34 nm、脉宽为15.38 ps、3 dB带宽为34.6 nm的耗散孤子脉冲，脉冲重复频率为23 MHz。在外腔使用单模光纤后，脉冲持续时间压缩至772 fs。利用基于非线性偏振旋转的腔内梳状滤波器，所产生的耗散孤子的中心波长可在1567 nm至1606 nm之间调谐，光谱调谐范围为39 nm，据我们所知，这是在通信波段工作的耗散孤子光纤激光器迄今报道的最宽调谐范围。
