For shrimp: If using dehydrated chiles, soak in warm water until softened, about 1 hour. Put both the chiles and bell peppers in a blender or food processor and pulse until smooth. Transfer chile mixture to a large bowl. Add sugar, orange zest, rice wine vinegar, honey, salt, ginger and coriander and mix together thoroughly. Skewer shrimp and place in a large casserole dish. Pour marinade over shrimp, cover with plastic wrap and refrigerate for 15 min. Preheat grill to medium-high while shrimp is marinating. Remove shrimp from marinade and grill for 1 to 2 min. per side. Brush with remaining marinade for last minute of grilling. Place skewers on a platter, sprinkle with sesame seeds and serve with the salsa. For salsa: In a medium bowl, combine the pineapple, red onion, cilantro, lime juice and ground ginger. Add salt and pepper to taste. Cover and refrigerate until ready to serve.