The control of nonlinear effects, such as SPM and FWM, has been a very well-known topic in research for many years. You should be able to find several books/papers according to your research topic through any online search addressing your question. The most general source which I can recommend you to start from is “Nonlinear Fiber Optics” of G. Agrawal (see attached). It will give you a basic information about these phenomena and will guide you to required literature.
Let me know if you’ll have any further questions. Good luck!