Silica-based optical waveguide circuit and fabrication method thereof
US6775454B2 · kind B2 · utility
2Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12195
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silica-based optical waveguide circuit serves to reduce the time required to production while allowing a spot size converting function to work sufficiently. In a silica-based optical waveguide circuit comprising an input/output waveguide core formed to be thicker than an waveguide core and a tapered portion for connecting the input/output waveguide core and the waveguide core, wherein the waveguide circuit further has a core layer at each side of the input/output waveguide core, a thickness T of the core layer at the side of the input/output waveguide core is smaller than the thickness H of the input/output waveguide core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.