Patent ID: 9575250
Date: 2017-02-21
CPC Classifications: G02B

Claim:
1. A method to form a waveguide, the method comprising: providing a polymer multilayer comprising a first polymer layer and a second polymer layer, wherein the first polymer layer has a first refractive index, and the second polymer layer has a second refractive index that is lower than the first refractive index; writing a first overlapping portion of the first polymer layer and the second polymer layer by directing a first light beam onto the polymer multilayer to induce mixing of the first polymer layer and the second polymer layer within the first overlapping portion; and writing a second overlapping portion of the first polymer layer and the second polymer layer by directing a second light beam on the polymer multilayer to induce mixing of the first polymer layer and the second polymer layer within the second overlapping portion to form the waveguide, wherein the waveguide includes: