Cook fettuccine according to package directions. Meanwhile, in a large skillet, saute the broccoli, onion and green pepper in 2 tablespoons butter until vegetables are tender. Add garlic; cook 1 minute longer.
In a large saucepan, combine the sauce mix, milk, water, salt, pepper and remaining butter. Cook over medium heat until thickened. Add the salmon and heat through. Drain pasta; add to vegetable mixture. Top with sauce and gently toss to coat. Sprinkle with bacon if desired. Yield: 4 servings.