Structures for filtering light polarization states on a photonics chip
US11422305B2 · kind B2 · utility
2Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Dec 2, 2020 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Dec 2, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/13
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Structures for polarization filtering and methods of forming a structure for polarization filtering. A waveguiding structure has a first waveguide core region including a first plurality of bends, a second waveguide core region including a second plurality of bends laterally spaced from the first plurality of bends by a gap, and a third waveguide core region including a third plurality of bends positioned beneath the gap. The first waveguide core region and the second waveguide core region contain a first material. The third waveguide core region contains a second material that differs in composition from the first material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.