Optical device having a stepwise or tapered light input/output part and manufacturing method therefor
US9869815B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Apr 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes an optical waveguide provided on a principal surface of a substrate. The optical waveguide includes a core and a cladding provided around the core. The cladding is configured by a substance having a refractive index smaller than 71.4% of the refractive index of the core. The core has constituent atoms substantially forming a diamond lattice structure. The optical waveguide has a light input/output part through which a light beam is input and/or output. The light input/output part decreases stepwise in thickness towards an output end while tapering down in its width. The core is provided in the light input/output part to have a (111) plane or an equivalent plane to the (111) plane exposed on a face of a riser of the stepwise thickness of the light input/output part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.