【摘要】 根据数字光纤通信中光接收机接收的光脉冲信号波形类型与特点,利用归一化放大器与均衡滤波器的传输特性.可以实现脉冲波形的归一化,以保证放大器与均衡滤波器输出波形皆为升余弦波,求得升余弦波有关参数,再根据APD-BJT光接收机中噪声与这些参数关系,得出噪声近似分析结论。更多还原

【Abstract】 In this paper, based on optical pulse signal type and characteristics in optical receiver for dig- ital optical fibcr communication, the uniformization of is given by using transmission characteris- tic of uniformed amplifier and equalige filter. Cosine ware is sccured for output wave of amplifier and equalized filter. Some paramters of cosine wave are obtained. Then, with the relation between noise of PD- JT optical receiver and these parameters, the approximate analysis result for noise can be dran.更多还原