Preheat oven to 400 degrees F. Place rack in center of oven.
In a small saucepan mix together all the ingredients for the Teriyaki sauce. Bring to a boil and stir until slightly thickened. Set aside to cool.
Prepare all the vegetables and place in a 9" x 13" baking dish or something similar that will fit vegetables in an even layer. Drizzle with olive oil.
Bake vegetables for 10 minutes.
Rinse salmon filets and pat dry. Remove vegetables from oven and lay salmon filets on top.
Using about half of the Teriyaki sauce, coat the salmon and drizzle over vegetables.
Bake for 10 minutes. Remove from oven and turn broil to low.
Brush or drizzle the remaining sauce over salmon.
Broil on middle rack for 5 minutes. Check salmon for doneness (see above for tips). 145 degrees F. It should separate easily and be semi-translucent in the center.
Serve immediately. Top with toasted sesame seeds and/or sliced green onions if desired.