Combine first 4 ingredients and 1/4 teaspoon salt in a small saucepan; bring to a boil over medium heat. Reduce heat, and cook until reduced to 1/2 cup (about 8 minutes).
Sprinkle salmon with remaining 1/4 teaspoon salt and pepper. Place salmon, skin side down, on a broiler pan coated with cooking spray. Broil 10 minutes or until fish flakes easily when tested with a fork or until desired degree of doneness. Serve with sauce.