Waveguide crossing having rib waveguides
US10620371B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Mar 5, 2016 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Mar 5, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photonic platform includes a substrate, a buried oxide layer on the substrate, a first optical layer on the buried oxide layer, the first optical layer including one or more waveguides shaped as rib waveguides protruding upwardly from a common underlying slab and a second optical layer spaced above the first optical layer, the second optical layer defining an upper waveguide that crosses over the one or more partially etched waveguides. A low-loss photonic switch may be made using a silicon photonic platform implementing this waveguide crossing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.