Heat wok or large, deep sauté pan (at least 12 inches) over medium-high heat.
Add 1 tablespoon olive oil to wok and swirl to coat.
Once oil is shimmering, add onion. Sauté for 4-5 minutes or until soft, then reduce to medium heat.
Stir in ginger and garlic, stirring constantly to prevent burning. Stir for 10-20 seconds, then push to edges of wok.
Drizzle in 1 more tablespoon of olive oil and follow directions for cooking vegetables.
Add red pepper, broccoli, and matchstick carrots to wok.
Stir-fry vegetables for 4-5 minutes or until mostly crisp.
Give sauce one more stir, then add cooked noodles and sauce to skillet with vegtaables.
Continue cooking, tossing everything with tongs, for 2-4 minutes or until sauce is absorbed into mixture and thickened, and vegetables are done.
Remove cooked salmon from oven and rest 5 minutes, allowing flavors to meld. Serve over ramen noodles, and garnish with green onions, if desired.