Heat oven to 375 F.
Place salmon fillet on a baking sheet and use a pastry brush to brush it with a few coats of balsamic vinegar. Reserve the rest of the balsamic for later. Season salmon with a dash of salt and pepper.
Bake salmon for 15-20 minutes until cooked to your desired level of doneness. For well done fish, you may need to add a couple of extra minutes in the oven.
While salmon is in the oven, combine strawberries, cilantro, jalapeño, green onion and lime juice in a medium bowl. Add salt and pepper to taste.
When salmon is cooked, brush a bit of the remaining balsamic vinegar over the top. Top salmon with strawberry salsa and serve immediately.