Stir together first 5 ingredients. Pour half of mixture into a shallow dish. Add steak, turning to coat. Cover and refrigerate steak 8 hours. Cover remaining soy sauce mixture, and refrigerate 8 hours.
Cook pasta according to package directions; drain and rinse with cold water. Drain and set aside.
Remove steak from marinade, discarding marinade, and place on a lightly greased rack in a broiler pan.
Broil steak 3 inches from heat 5 minutes on each side or to desired degree of doneness. Let stand 5 minutes, and cut diagonally across the grain into thin slices.
Combine cooked pasta, steak slices, reserved soy sauce mixture, bell pepper, and tomato in a large bowl. Toss gently to coat.