脉冲位置调制对脉冲式光纤激光器调制速率的影响  

Effect for Modulation Rate of Pulsed Fiber Laser on Pulse Position Modulation

作　　者：任鑫[1] 李洪祚[1] 王岩[1] 郝子强[1] 

机构地区：[1]长春理工大学空间光电技术研究所,吉林长春130022

出　　处：《光学学报》2014年第7期33-40,共8页Acta Optica Sinica

基　　金：国家自然科学基金(60977052);国家711项目(2011AA7117046)

摘　　要：脉冲式光纤激光器受到其重复频率的限制,导致其数据传输速率较低,严重影响了其在通信领域的应用。为了改善其性能并使其能更好地应用到通信领域,针对脉冲式光纤激光器的这种缺点,通过三种脉冲位置调制(PPM)调制方式对其进行调制并对其性能的影响进行了实验研究。通过改变三种PPM调制的调制位数脉冲时隙宽度对脉冲式光纤激光器的调制速率的影响以及三种PPM调制方式对脉冲式光纤激光器的输出功率误码率的影响进行了仿真研究。分析结果表明,单脉冲位置调制(L-PPM)调制方式最适合脉冲式光纤激光器,可以将重复频率为200kHz的脉冲式光纤激光器的调制速率提高到1.387Mbit/s,该结果有利于脉冲式光纤激光器在通信中的应用。The limitation of low repetition rate for pulsed fiber laser makes data transmission rate lower, which has a serious impact on its application in the field of communications. In order to improve its performance and make it better applied to the field of communications, the pulsed fiber laser is modulated by three pulse position modulation （PPM） modulations and its impact on performance are studied experimentally. By changing the modulaton digits of three PPM modulations method, the influence of time slot width on modulation rate of pulsed fiber laser system is investigated, and the effect of the modulations on output power bit error rate is researched. The results show that the level pulse pastion modulation （L-PPM） modulation method is most suitable for pulsed fiber lasers and the modulation rate can be enhanced to 1. 387 Mbit/s under the repetition rate of 200 kHz. The findings will be benefit for pulsed fiber laser applications in communications.

关 键 词：光通信 脉冲式光纤激光器 调制速率 脉冲位置调制 

分 类 号：TN29[电子电信—物理电子学]