Dallas also announced that left wing Reilly Smith has been returned on loan to Texas.
Oleksiak, 20, leads all Texas Stars defensemen in scoring with 23 points (three goals, 20 assists) in 43 contests this season. The Toronto native recently played in the AHL All-Star Game in Providence, R.I., where he earned an assist on the game-winning goal and had a plus-3 rating in the contest.
The 6-foot-7, 254-pound defenseman was Dallas’ first-round selection (14th overall) in the 2011 NHL Entry Draft.
Roussel, 23, ranks seventh on the Texas Stars in scoring with 19 points (eight goals, 11 assists) and leads the team with 103 penalty minutes. The Roubaix, France, native is looking to make his NHL debut and become the eighth French-born player to skate in an NHL contest.
Roussel, who has already set career highs in goals, assists and points this year, was undrafted and signed by Dallas as a free agent on July 2, 2012.
Smith, 21, has gone scoreless in six games for Dallas this season and is still looking to earn his first career NHL point. Prior to being recalled by Dallas, the Toronto native skated for the Texas Stars where he currently ranks second on the team in scoring with 25 points (11 goals, 14 assists) in 37 contests this season.
Smith was Dallas’ third-round selection (69th overall) in the 2009 NHL Entry Draft.