Optical waveguides and methods for making the same
US6677175B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 27, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12097
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a method for producing an optical waveguide that includes the steps of: (a) forming a core structure, the core structure including an at least partially cured core composition, on a master defining a waveguide pattern; (b) applying over the top of the core structure and the master a cladding layer including a liquid cladding composition; (c) curing the cladding layer to form a core/cladding combination; and removing the core/cladding combination from the master so as to expose at least a portion of the core structure, wherein the refractive index of the core material is at least about 0.05 percent higher than the refractive index of the cladding material. In another embodiment, the invention relates to a method for producing an optical waveguide core structure that includes the steps of: (a) applying a core composition to a substrate defining a waveguide core pattern; (b) removing a portion of the core composition from an exposed surface of the filled waveguide core pattern; and (c) at least partially curing the core composition to form a core structure. In another embodiment, the invention relates to a composition for forming either the core or cladding port…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.