Process for producing an article having a predetermined surface shape and optical waveguide element
US6535680B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0075
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is provided an article which can be produced at a low cost, is excellent in heat resistance, chemical resistance and dimensional accuracy, and has a predetermined surface shape. In particular there is provided an optical waveguide which has high heat resistance and chemical resistance, a large difference in refractive index, small absorption at a communication wavelength of a near infrared range, reliability and a low loss at an optical communication range. The process for producing the article involves disposing a sol-gel material containing specified silanes between a substrate and a mold in the form of a film so as to make the sol-gel material closely contact the substrate and the mold, and heating to form a gelled film having a surface shape which is the inversion of the surface shape of the mold on the surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.