Functional imprinted optical structures for optical devices

A method for forming an optical device, comprising:

• disposing a first device material layer over a substrate, the first device material layer being a different material from the substrate;
• patterning a portion of the first device material layer to form a first plurality of device structures in a top surface of the first device material layer, the first plurality of device structures comprising a first plurality of gratings and a second plurality of gratings;
• disposing a second device material layer on the top surface of an unpatterned portion of the first device material layer, the second device material layer being an uncured imprintable material;
• and
• patterning the second device material layer to form a second plurality of device structures in the second device material layer, the second plurality of device structures comprising a third plurality of gratings,
• wherein the third plurality of gratings comprises a plurality of blazed device structures or a plurality of staircase device structures, and each of the third plurality of gratings comprises a grating depth extending from the top surface of the first device material layer to a top surface of each of the respective third plurality of gratings.