Generation of Multiwavelength Noise-Like Square-Pulses in a Fiber Laser
Generation of Multiwavelength Noise-Like Square-Pulses in a Fiber Laser
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DOI：
10.1109/lpt.2014.2344505
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发表时间：
2014-07
影响因子：
2.6
通讯作者：
Hao Liu;Xu-Wu Zheng;Nian Zhao;Qiuyi Ning;Meng Liu-;Z. Luo;A. Luo;Wen-Cheng Xu
中科院分区：
文献类型：
--
作者：
Hao Liu;Xu-Wu Zheng;Nian Zhao;Qiuyi Ning;Meng Liu-;Z. Luo;A. Luo;Wen-Cheng Xu
在被动锁模8字形光纤激光器中实现了多波长方波脉冲的产生。多波长方波脉冲是由不同波长的方波脉冲叠加而成，其脉宽随泵浦功率的增加而展宽。利用自相关器证实了方波脉冲为类噪声脉冲。通过适当地旋转光子晶体，可以获得双波长或三波长的方波脉冲。所得结果为理解光纤激光器中具有类噪声方形轮廓的多波长脉冲的形成机理提供了一个新的视角。
The generation of multiwavelength square pulses is demonstrated in a passively mode-locked figure-eight fiber laser. The multiwavelength square pulses were found to be structured by superposing the square pulses centered at different wavelengths, whose pulse duration broadens with the increasing pump power. The square pulse was confirmed as the noise-like pulse by using an autocorrelator. By properly rotating the PCs, the dual- or triple-wavelength square pulse could be achieved. The obtained results provide a new viewpoint for understanding the formation mechanism of the multiwavelength pulses with noise-like square profiles in fiber lasers.