In a small bowl, stir together the orange juice and cornstarch until well blended. Add the honey, soy sauce, vinegar, and red pepper sauce, stirring to combine.
In a large wok or 12-inch nonstick skillet, heat the olive oil and sesame oil over moderately high heat until hot but not smoking. Add the carrots, sweet red pepper, and onion and stir-fry for 8 minutes. Stir in the orange juice mixture and cook for 1 minute or until the sauce boils and thickens. Stir in the sesame seeds if desired. Serve with grilled poultry or fish and brown rice.