Step couplers for planar waveguides
US9983355B1 · kind B1 · utility
2Cited by
24References
20Claims
0Family size
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Key dates
| Filing date | Aug 24, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupler can be provided for coupling a light beam into a waveguide. The optical coupler can include a stepped structure, such as to reduce difficulties during manufacture, reduce expenses associated with manufacture, and additionally, to provide an increased acceptance angle of the optical coupler. The waveguide can include a guiding region where a cladding thickness can be increased relative to a coupling region, such as to reduce losses due to evanescent outcoupling in the guiding region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.