将单层石墨烯覆盖在拉锥光纤上,光通过倏逝场和石墨烯相互作用实现锁模脉冲输出。当抽运功率调到阈值230mW时,可以实现自启动的锁模脉冲输出;将抽运功率固定在300mW处,调节偏振控制器可实现一个孤子束中包含2~6个脉冲的可控脉冲数输出;将抽运功率固定在450mW处,调节偏振控制器可实现不同阶次的谐波锁模,最高实现117阶谐波锁模,此时脉冲重复频率高达2.412GHz。 A single layer of graphene is overlaid on a taper fiber, and the light produces mode-locked pulse output through the interaction of evanescent field and graphene. When the pump power is adjusted to the threshold value of 230mW, the self-starting mode-locked pulse output can be realized. When the pumping power is fixed at 300mW, adjusting the polarization controller can achieve a controllable pulse number containing 2 ~ 6 pulses in the soliton beam Output; the pumping power is fixed at 450mW Department, adjust the polarization controller can achieve different orders of harmonic mode locking, up to 117 order harmonic mode locking, pulse repetition frequency up to 2.412GHz.