用于光纤CDMA的超短光脉冲源特性分析

Ultrashort Optical Pulse Source for Fiber Optic CDMA Using Gain -Switched Semiconductor Laser

超短光脉冲的产生是光纤 CDMA通信的关键技术之一。本文采用半导体激光器多模速率方程模型 ,分析了增益开关半导体激光器的输出特性 ,对激光器的本征参数、工作条件与超短光脉冲输出特性的关系进行了探讨 ;也研究了获取最佳输出特性的条件 ,可通过控制偏置电流来调节光脉宽 ,且在最佳偏置电流下对调制电流脉宽有一定的宽容度。

Generation of ultrashort optical pul se s is one of key technologies for high-speed optical fiber CDMA communication sy stems.Influences of the laser diode inherent parameters and operating conditions on the output properties of the ultrashort optical pulses are investigated.In a ddition,the condition for getting optimum output performances is studied.