1. Combine the orange juice and the next 4 ingredients (through ginger slices) in a medium saucepan and bring the mixture to a boil; cook 8 minutes or until the glaze is thickened and syrupy. Remove the ginger slices, and discard.
2. Meanwhile, combine flour, salt, and pepper in a shallow dish. Then dredge salmon in flour mixture.
3. Heat the olive oil in a large nonstick skillet over medium-high heat. Working in batches, sear the salmon for 4 minutes or until deeply golden. Brush both sides of the fish with the warmed glaze. Place the salmon, seared side up, on a baking sheet that's lined with foil and lightly coated with cooking spray.
4. Finish cooking the salmon in a preheated 425° oven 4 minutes or until heated through and opaque in the middle. Garnish with green onions.