Cook fettuccine to desired doneness as directed on package. Drain; cover to keep warm.
Meanwhile, place 1/3 cup water in medium saucepan. Bring just to a boil over medium heat. Reduce heat to medium-low. Add asparagus; cover and cook 4 to 6 minutes or until tender. Do not drain. Add Alfredo sauce and salmon; cover and cook an additional 2 to 3 minutes or just until thoroughly heated.
Place fettuccine in large serving bowl. Add asparagus mixture; toss to coat.