Planar optical waveguide assembly and method of preparing same
US6905904B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2002 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of preparing a planar optical waveguide assembly, comprising the steps of (i) applying a curable polymer composition to a surface of a substrate to form a polymer film; (ii) curing the polymer film to form a lower clad layer; (iii) applying a silicone composition to the lower clad layer to form a silicone film; (iv) exposing at least one selected region of the silicone film to radiation having a wavelength of from 150 to 800 nm to produce a partially exposed film having at least one exposed region and at least one non-exposed region; (v) removing the non-exposed region of the partially exposed film with a developing solvent to form a patterned film; and (vi) heating the patterned film for an amount of time sufficient to form at least one silicone core having a refractive index of from 1.3 to 1.7 at 23° C. for light having a wavelength of 589 nm; wherein the lower clad layer has a refractive index less than the refractive index of the silicone core. A planar optical waveguide assembly prepared according to the method of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.