Semiconductor optical device and semiconductor assembly
US9696496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2016 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Nov 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/933
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical device includes a semiconductor substrate having first to fourth regions, a 90-degree optical hybrid provided in the third region on a principal surface of the semiconductor substrate, first and second waveguides provided in the first region and being optically coupled to the 90-degree optical hybrid, a photodiode provided in the fourth region, a third waveguide provided in the second region to optically couple the 90-degree optical hybrid to the photodiode, and a metal layer provided on a back surface of the semiconductor substrate. The metal layer includes a first part provided in the first region and a second part provided in the second region that is spaced apart from the first part by a distance. The 90-degree optical hybrid has a first length. The distance between the first and second parts is more than or equal to the first length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.