报道了石墨烯作为可饱和吸收体的被动锁模掺铒光纤孤子激光器。采用环形腔结构，在抽运功率为370.4 mW时，产生了重复率为3.16 MHz，脉宽约为1.32 ps，平均输出功率为1.07 mW的锁模脉冲，其单脉冲能量为0.338 nJ，并观察到激光中心波长在1556.72~1558.76 nm之间可调。基于Ginzburg-Landau方程进行了数值模拟，得到的结果和实验一致。

A passively mode-locked erbium-doped fiber soliton laser based on graphene saturable absorber is reported. At a pump power of 370.4 mW, the pulse width is about 1.32 ps and the pulse repetition rate is 3.16 MHz with average output power of 1.07 mW, which corresponds to single pulse energy of 0.338 nJ. Moreover, the central wavelength can be tuned between 1556.72 nm and 1558.76 nm. The simulation based on Ginzburg-Landau equation is consistent with the experimental results.