| CPC G02B 6/0055 (2013.01) [G02B 6/021 (2013.01); G02B 6/02123 (2013.01)] | 20 Claims |

|
1. A method of forming an optical device comprising:
forming a first reflector layer;
forming a cladding layer on the first reflector layer;
forming a grating layer on the cladding layer; and
forming a second reflector layer on the cladding layer, wherein the second reflector layer comprises an opening.
|