Kasami will be Fulham's lone representative at the Games.
"It is something that I am very much looking forward to," he told fulhamfc.com. "It will be a good experience to play there.
"It's quite nice because last season I played in the European Under-21 Championships for Switzerland and it will be a similar group of players which will be going to the Olympics as under-23s.
"The Olympics is a special tournament because it does not come along very often and you do not get the chance to play every year, so it is something which is a little different. Having three over-age players makes it quite interesting and very exciting."