提出了一种新型的40 Gb/s全光串并转换(AOSPC)的实现方案，该系统主要由波分/时分脉冲光源的产生与顺序多波长变换两个部分构成。实现了信道波长数目和重复频率可调的波时分脉冲光源；分析了基于单个半导体光放大器(SOA)中的交叉相位调制效应(XPM）实现顺序多波长变换的原理，并在此基础上采用顺序多波长变换技术实现了将40 Gb/s的串行输入光信号转换为8路5 Gb/s的并行输出信号。该技术可将高速率的光信号转换成为多路低速率信号，进而可以使用现有的电子器件对信号进行处理，为下一步的光分组交换中的报头处理技术和光随机存取存储器(RAM)的研究提供了一种可行的思路。

A novel all-optical serial to parallel converter is proposed. The scheme mainly consists of time-and-wavelength-interleaved pulse train generation and the sequential multi-wavelength conversion based on the cross-phase modulation (XPM) of a single semiconductor optical amplifier (SOA). Using super-continuous spectrum generation in high nonlinear fiber, a time-and-wavelength-interleaved pulse source is generated with tunablity of both channel wavelength and bit rate. And the all-optical serial to parallel conversion has been implemented based on sequential multi-wavelength conversion in SOA. In the experiment, 40 Gb/s serial optical signals are converted into 8-channel 5 Gb/s parallel optical signals. It should be pointed out that, this technique can achieve the all optical serial-to-parallel conversion of more than 100 channels without remarkably increasing the insertion losses, which will be a solid preparation for optical label processing and random access memory (RAM) technique in packet switching networks.