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中文摘要：
报道了一种带有周期性双折射光纤滤波器的全正色散多波长被动锁模耗散孤子掺镱光纤激光器.通过数值模拟发现加入滤波器后激光器能输出多波长耗散孤子脉冲,调节滤波器带宽大小可以得到不同波长个数和波长间隔的多波长锁模耗散孤子脉冲.在激光器产生的四波长和五波长耗散孤子脉冲中观察到了耗散孤子分子,并且通过调节滤波器参数和饱和功率可以改变多波长脉冲中耗散孤子分子的个数和波长.这是在被动锁模光纤激光器中首次实现包含有耗散孤子分子的多波长脉冲.另外还在实验上实现了全正色散双波长被动锁模耗散孤子的产生.
英文摘要：
An all-normal-dispersion multi-wavelength mode-locked dissipative soliton Yb-doped fiber laser with a periodic birefringence fiber filter is investigated in this paper.Numerical simulations show that multi-wavelength dissipative solitons can be generated by adding a filter into the fiber laser,and adjusting the bandwidth of filter can generate multi-wavelength dissipative solitons with different wavelength numbers and separations.Dissipative soliton molecules（DSM）can be observed in four-and five-wavelength dissipative solitons.Adjusting the parameters of the filter and saturation power can change the number and wavelength of DSM in the multi-wavelength pulses.This is the first time that multi-wavelength mode-locked dissipative solitons with DSM generated from mode-locked fiber laser have been observed,and that the dual-wavelength mode-locked disspative solitons have been obtained from an all-normal-dispersion Yb-doped fiber laser in experiment.
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