Preheat the oven to 350°F.

To prepare the orange juice reduction, place the orange juice and the ginger in a medium saucepan. Bring to a boil over medium high heat. Reduce the heat to medium and continue a soft boil uncovered for about 10 minutes or until the juice is reduced to about 1/8 cup. You will need to keep an eye on it and adjust heat as necessary to avoid overboiling. The reduced juice will have a very dark color. Remove the saucepan from the heat and stir in the Dijon mustard, rosemary and brown sugar.

Place the salmon on a grill pan or a baking sheet lined with aluminum foil. Carefully spoon the orange juice glaze over the salmon, spreading with the back of the spoon for even coverage. Bake for about 20 - 25 minutes or until the fish flakes easily. Remove to a serving dish and sprinkle with chopped cilantro and chives.