Hello Sunny,
you can’t load OptiSystem projects to the forum. You may email it to ahmad.atieh@optiwave.com.
The Brillouin feature in the bidirectional fiber component would allow you to set the Brillouin parameters. We can discuss further by email.
Which version of OptiSystem do you have?
Do you you have valid license of OptiSystem? please email me the license no.
Regards,
Ahmad