In a large bowl, combine cucumbers, green onion, vinegar, 1 tablespoon soy sauce, 1 teaspoon sugar, and 1/4 teaspoon freshly ground black pepper until well mixed.
Cover and refrigerate.
Make teriyaki sauce: In small saucepan, heat sherry, honey, 1/2 cup soy sauce, and 2 tablespoons sugar to boiling on medium-high heat.
Cook 10 minutes or until reduced by half, stirring occasionally.
Meanwhile, line 151/2 'x101/2' jelly-roll pan or broiler pan with foil.
Sprinkle salmon with 1/2 teaspoon freshly ground black pepper to season both sides, and arrange on pan.
Broil 4 minutes.
Turn salmon over and broil 2 to 3 minutes longer or until just opaque throughout.
To plate: Divide rice, and cucumber salad among 4 dinner plates.
Place salmon on top of rice anbd spoon teriyaki sauce over salmon and sprinkle with sesame seeds.