Thank you very much for these valuable information. Yes please send me the articles. Also I need to investigate the XPM and SRS on the same project, what do I have to change? and I need to know which one is the dominant effect, is it XPM? I have read that SRS depends on high power signals and my research is on high power jamming signals that causes distortion to other signals and may lead to service disruption. I used 0 dB power signals in my last project.