Preheat oven to 400°F.

In small bowl, whisk together orange zest and juice, soy sauce and ginger; set aside.

Packets (make 4):

Cut large piece of parchment paper. In the center, place fillet and 4 spears and pour marinade on top.

Form packet by folding paper long-wise several times. Fold up each end in toward fillet.

Place packets on baking sheet and bake 15-20, until fillets flake and asparagus is tender.