Optical coupling using polarization beam displacer
US9927575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2016 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupling apparatus for coupling an optical fiber to a photonic chip is described. The apparatus includes a collimating microlens for collimating light from the optical fiber; a polarization splitting beam displacer for separating the light collimated by the collimating microlens into orthogonally polarized X and Y component beams; at least one focusing microlens for directing the X and Y component beams separately onto the photonic chip; and first and second surface grating couplers (SGCs) orthogonally disposed on the photonic chip and configured for operation in a same polarization state, for coupling the X and Y component beams, respectively, to the photonic chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.