Hi Ramin,
There are a lot of FPGA package, it is unlikely we can have the reference design for all package, perhaps you can migrate it to your desired part number (OPN) and start from there.
If it is optical communication, I doubt that we have any IP for this solution. Perhaps you need to develop yourself.
Or you can try to refer to Intel FPGA IP list and see if any of it suit your needs. You may check the available IP listed here:
https://www.intel.com/content/www/us/en/products/programmable/intellectual-property.html#:~:text=The%20Intel%C2%AE%20FPGA%20Intellectual,application's%20performance%20and%20IP%20strategies.&text=All%20of%20these%20are%20available,Quartus%C2%AE%20Prime%20Design%20Software.
I am sorry to say that there is no direct solution for you. Maybe I will advise you to contact the third-party developer and get the help there.
Thanks.