1. Combine juice, sugar, and 1/8 teaspoon salt in a bowl; stir until sugar dissolves. Pour juice mixture into an 11 x 7-inch glass or ceramic baking dish; cover and freeze overnight.
2. Let granita stand at room temperature 30 minutes; scrape with a fork.
3. Combine remaining 1/8 teaspoon salt, pear, and remaining ingredients in a medium bowl; let stand 10 minutes. Divide granita evenly among 8 bowls; top evenly with pear mixture.