Planar optical waveguide, method for manufacturing the same and polymer optical waveguide
US6836608B2 · kind B2 · utility
2Cited by
13References
9Claims
0Family size
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Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A planar optical waveguide includes a layered film formed on a substrate, and an optical waveguide core formed in the layered film. A cross section of the optical waveguide core is substantially quadrilateral, and a dopant layer including refractive index-lowering molecules is provided around the optical waveguide core. The refractive index-lowering molecules included in the dopant layer are unevenly distributed in the optical waveguide core with a concentration that is higher toward outer sides and corners of the optical waveguide core, whereby a graded-index optical waveguide is constituted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.