石墨烯被动锁模谐波阶数可调的掺铒光纤孤子激光器  

Graphene-based erbium-doped fiber soliton laser with passive mode locking and tunable harmonic orders

作　　者：程辉辉[1] 罗正钱[1] 叶陈春[1] 刘纯[1] 刘稹[1] 

机构地区：[1]厦门大学信息科学与技术学院、电子工程系光电子技术研究所,福建厦门361005

出　　处：《光电子．激光》2012年第6期1035-1038,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61177044);中央高校基础创新基金(201112G019)资助项目

摘　　要：采用石墨烯被动锁模的掺Er光纤(EDF)环形腔,获得稳定的谐波阶数可调的孤子脉冲激光。通过调节EDF环形腔中的偏振控制器(PC)改变光腔损耗,实现了锁模谐波从一阶至四阶的可控运转。连续锁模基频重复频率为3.873MHz,中心波长为1 557.6nm,谱线宽度为4.5nm,有明显孤子边带,信噪比(SNR)约为45dB,二、三和四次谐波锁模脉冲重复频率分别为7.745、11.618和15.491MHz。本文的实验结果可用工作于反常色散区锁模激光器的多孤子形成机理来解释。The stable soliton pulse laser with tunable harmonic orders has been obtained using a graphene-based passively mode-locked erbium-doped fiber（EDF） ring for the first time.By adjusting the polarization controller（PC） to change the cavity loss,the mode-locked soliton laser can be tunable from the fundamental order to the fourth harmonic order.The fundamental pulse repetition rate is 3.873 MHz,the central wavelength of laser is 1 557.6 nm,the linewidth is 4.5 nm with obvious soliton edge band,and the signal to noise ratio（SNR） is about 45 dB.The pulse repetition rates of the second,third and fourth harmonics are 7.745 MHz,11.618 MHz and 15.491 Mhz,respectively.The experimental results in this paper can be explained with the multi-soliton formation in mode-locked laser working in abnormal dispersion region.

关 键 词：掺Er光纤(EDF)激光器 石墨烯 被动锁模 孤子激光 谐波阶数可调 

分 类 号：TN248[电子电信—物理电子学]