"Fredrik is a player I have followed for some time through my contacts with the Sweden team," Fulham boss Roy Hodgson told the club's official website.
"I watched him closely with his club side and we did a lot of research on him.
"I am delighted he has joined us.
"I had the opportunity to see him at close hand in the three matches that Sweden played in Euro 2008 and we decided that this was the player for us at right-back.
"Certainly with John Pantsil and Fredrik Stoor we have excellent cover for that position for the coming season."