In a small sauce pan, combine soy sauce, brown sugar, ginger, garlic, and rice wine vinegar and bring to a simmer over medium-low heat. Stir and cook for five minutes.
In a small bowl, combine the cornstarch and water, mixing well. Add to the pan along with the pineapple juice, and allow mixture to return to a simmer.
Pat salmon fillets dry with a paper towel and place on the prepared cookie sheet. Spoon glaze generously over the tops of each fillet. You will have some left over!
Place pan in the upper half of the oven and cook for 10-12 minutes. Remove pan from oven and add a small amount of leftover glaze to the top of each fillet.