Berba's deal was rubberstamped this afternoon.
"I'm impressed with the set up here and the people have made me feel welcome. There is a close and personal feel around the club and I can't wait to get started."
Cottagers boss Martin Jol added: "Dimitar is a player I've always admired. He did well for me at Spurs and I'm sure that he will do well here at Fulham.
"He's a player of great quality and technical ability who will give me the attacking option I've been looking for. When he's not scoring goals, his ingenuity often leads chances being created for his teammates and I'm delighted that we've been able to convince him to come to us, as there was a lot of attention from other clubs."