Polarization-multiplexed, dual-comb all-fiber mode-locked laser
Polarization-multiplexed, dual-comb all-fiber mode-locked laser
复制标题
偏振复用、双梳全光纤锁模激光器
DOI：
10.1364/prj.6.000853
复制
发表时间：
2018
影响因子：
7.6
通讯作者：
Zheng Zheng
中科院分区：
文献类型：
--
作者：
Xin Zhao;Ting Li;Ya Liu;Qian Li;Zheng Zheng
锁模光纤激光器可以同时产生两个异步的超短脉冲序列，可以作为低复杂性双梳计量应用的替代光源，具有很大的吸引力。虽然已经提出并论证了几种实现这种激光器的多路复用方案，但在这里我们研究了具有有限腔内双折射的被动锁模光纤激光器的激光特性。通过在非保偏单模腔中引入一段保偏(PM)光纤，产生了偏振态接近正交的双非同步脉冲。由于重复频率相差数百赫兹，该脉冲具有良好的光谱重叠，并显示出典型的偏振锁定矢量孤子特征。结果表明，在反常色散或净正常色散条件下，可以分别产生对偶向量孤子和对偶耗散向量孤子。这种偏振多路复用单单腔双梳激光器可以在需要简单的双梳系统解决方案的各种应用中得到进一步的应用。
Mode-locked fiber lasers that can simultaneously generate two asynchronous ultrashort pulse trains could play an attractive role as the alternative light sources for low-complexity dual-comb metrology applications. Although a few multiplexing schemes to realize such lasers have been proposed and demonstrated, here we investigate the lasing characteristics of a passively mode-locked fiber laser with a finite amount of intracavity birefringence. By introducing a section of polarization-maintaining (PM) fiber into the otherwise-non-PM-single-mode cavity, dual asynchronous pulses with nearly orthogonal states of polarization are generated. With a repetition rate difference of hundreds of hertz, the pulses have well-overlapped spectra and show typical features of polarization-locked vector solitons. It is demonstrated that under an anomalous or net normal dispersion regime, either dual vector solitons or dual dissipative vector solitons can be generated, respectively. Such polarization-multiplexed single single-cavity dual-comb lasers could find further uses in various applications in need of simple dual-comb system solutions.