Optical coupler and optical device including the same
US9316792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2014 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Jul 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12092
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are an optical coupler and an optical device including the same. The optical coupler includes: a substrate; a buffer layer on the substrate; and an optical coupling layer including a horizontal mode expander layer and a vertical mode expander layer, wherein the horizontal mode expander layer expands in one direction on the buffer layer, and wherein the vertical mode expander layer adjusts a stepped difference between the horizontal mode expander layer and a plurality of optical transmission devices having different diameters or sectional areas and connected to both sides of the horizontal mode expander layer, and the vertical mode expander layer is disposed on a side of the horizontal mode expander layer to minimize optical loss between the plurality of optical transmission devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.