摘要
在DWDM系统中,当输入光功率超过门限时,会产生信道间功率转移的受激喇曼散射(SRS)效应,并且随着信道数目的增多,信道容量的增大,输入信道的功率迅速增长,信道间功率转移的受激SRS效应增强。使用分段二次函数对熔石英喇曼增益谱进行了最小二乘拟合,提出新的熔石英喇曼增益谱的近似计算模型,提高了熔石英喇曼增益谱计算的精度。
In DWDM system,when the input optical power is large,the power transfer between the channel stimulated Raman scattering（SRS） effect can be produced.With the increase of channel number and the increase of channel capacity,the input channel power growing rapidly,the stimulated Raman scattering（SRS） effect of the power transfer between channels increased.Based on least squares method,a new Raman gain spectrum of fused quartz approximate calculation model is introduced,the use of piecewise quadratic function of Raman gain spectrum of fused silica least squares curve fitting to is proposed improve the accuracy of the calculation.
出处
《现代电子技术》
2012年第9期37-40,共4页
Modern Electronics Technique
基金
陕西省教育厅项目(2010JK832)
关键词
DWDM
SRS
信道
最小二乘法
DWDM
SRS
communication channel
least square method
