Jin Xinxin, Zhang Meng, Hu Guohua, Wu Qing, Zheng Zheng, Hasan Tawfique
Opt Express. 2020 Mar 2;28(5):6937-6944. doi: 10.1364/OE.385142.
We numerically and experimentally demonstrate the generation of broad bandwidth mode-locked dual-wavelength pulses with diverse-pattern from a dispersion managed erbium-doped (Er-doped) fiber laser. The two-peak gain profile of the Er-doped fiber is shown to have advantages in achieving broadband dual-wavelength pulses compared to a comb filter in our cavity. Our obtained bandwidths of 24 nm and 11.5 nm represent the broadest achieved in an Er-doped dual-wavelength fiber laser to date. In addition, the weak third-order dispersion (TOD) of the fibers facilitates two dispersion-pattern pulses (one stretched pulse and one dissipative soliton) generated in the near zero dispersion regime. Our results provide a convenient, effective way to obtain such sources for potential applications, such as in dual-comb metrology and multicolor pulses in nonlinear microscopy.
我们通过数值模拟和实验证明了，从色散管理掺铒光纤激光器中可以产生具有多种模式的宽带锁模双波长脉冲。与我们腔内的梳状滤波器相比，掺铒光纤的双峰增益分布在实现宽带双波长脉冲方面具有优势。我们获得的24纳米和11.5纳米带宽是迄今为止掺铒双波长光纤激光器中实现的最宽带宽。此外，光纤的弱三阶色散（TOD）有利于在接近零色散区域产生两种色散模式脉冲（一个拉伸脉冲和一个耗散孤子）。我们的结果为获得此类光源提供了一种方便、有效的方法以用于潜在应用，例如双梳计量和非线性显微镜中的多色脉冲。
