Hello, everyone.
I’m working on a self-seeding system where the RSOA noise is turn into an optical carrier by circulating it on an external cavity. Basically, I have the following elements: RSOA, convert to noise beans, time delay, gaussian optical filter and optical mirror. And it works: after 100 iterations, I get a quasi-CW signal (see Fig. attached). However, there are some “negative peaks” or “dips” in the time domain (see Fig. attached). This is not supposed to happen in a physical system. It is clearly a numerical calculation problem.
Any ideas on what could it be and how can I avoid this?
Thank you very much!
.
