Patent ID: 6786968
Filing Date: 2004-09-07
Classification: B82Y,C30B,G02B

Abstract:
A method for making a photonic crystal structure at a temperature compatible with a substrate comprising a material selected from the group consisting of III-V compounds, silicon, glass, copper and aluminum, said method comprising:depositing a first amorphous silicon layer on said substrate at said temperature; patterning said first amorphous silicon layer to correspond to a first layer of said photonic crystal structure; depositing a first sacrificial filler layer to planarize said first amorphous silicon layer; depositing a second amorphous silicon layer on said first amorphous silicon layer; patterning said second amorphous silicon layer to correspond to a second layer of said photonic crystal structure; depositing a second sacrificial filler layer to planarize said second amorphous silicon layer; and removing said first and said second sacrificial filler layer from said photonic crystal structure using an etching process.