Fabrication of optical waveguides in periodically poled lithium niobate
US7430356B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Nov 16, 2004 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Feb 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12107
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of fabricating an optical waveguide (18) comprises providing a sample of lithium niobate (10) that has one or more periodically poled gratings made by electric field poling, applying a patterned surface layer of metallic zinc (16) to a z-face of the sample so that the layer (16) has a pattern corresponding to an intended pattern of waveguides (18) to be written int lithium niobate, and heating the sample to diffuse the metallic zinc (16) into the lithium niobate so as to form an optical waveguiding structure (18) within the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.