Waveguide mode expander using amorphous silicon
US9885832B2 · kind B2 · utility
11Cited by
74References
10Claims
0Family size
Assignee
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Key dates
| Filing date | May 27, 2015 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | May 27, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12152
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide mode expander couples a smaller optical mode in a semiconductor waveguide to a larger optical mode in an optical fiber. The waveguide mode expander comprises a shoulder made of crystalline silicon and a ridge made of non-crystalline silicon (e.g., amorphous silicon). In some embodiments, the ridge of the waveguide mode expander has a plurality of stages, the plurality of stages have different widths and/or thicknesses at a given cross section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.