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全光波长转换器是全光网络中的关键光电子器件。基于半导体光放大器的交叉增益型波长转换器具有结构简单容易实现、转换效率高、波长转换范围宽以及转换速率高的特点。文中在自行研制半导体光放大器的基础上 ,对交叉增益型波长转换器进行了实验研究。讨论了实现波长转换的基本原理 ,描述了实验系统结构 ,实现了速率为 140Mbit/s的 1315nm和 130 1nm之间的波长转换。研究了波长转换器泵浦光功率、探测光功率以及放大器注入电流转换效率、消光比和噪声特性的影响 ,研究结果与文献中报道的相同。研究表明 ,不同因素对不同指标的影响是相互制约的 ,要全面提高波长转换器的性能 ,必须折衷考虑各方面的因素。研究结果对半导体光放大器结构参数的优化和波长转换工作条件的优化有一定的指导作用。
All-optical wavelength converter is the key optoelectronic device in all-optical network. The cross-gain type wavelength converter based on the semiconductor optical amplifier has the advantages of simple structure and easy implementation, high conversion efficiency, wide wavelength conversion range and high conversion rate. Based on the self-developed semiconductor optical amplifier, an experiment on cross-gain wavelength converter is carried out. The basic principle of wavelength conversion is discussed. The structure of the experimental system is described. The wavelength conversion between 1315nm and 130nm at 140Mbit / s is achieved. The effects of pump power, probe power and amplifier injection current conversion efficiency, extinction ratio and noise characteristics on wavelength converter are studied. The research results are the same as reported in the literature. The research shows that the influence of different factors on different indexes is mutual restraint. To comprehensively improve the performance of wavelength converters, we must compromise on various factors. The research results have some guidance to optimize the structural parameters of semiconductor optical amplifiers and optimize the working conditions of wavelength conversion.