Hi Alberto, Lumerical products such as FDTD allow users to try a month for free. But we do not have student version and the software is not free. If after trial you think it is a good fit for your project, I would strongly suggest you to report to your supervisor who will purchase a license for you. As you know the simulation software is your tool to do your project.
https://www.lumerical.com/evaluate-for-free/
In the mean time you can post your questions in this forum while you have a valid license (trial or purchased) and we'd be happy to help you.
You are navigating away from the AIS Discovery experience