Optical waveguide type optical terminator
US9274280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2012 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | May 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12126
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide type optical terminator forms an optical waveguide structure including at least an optical absorption core (103) which is formed on a clad layer (102) and includes a portion composed of silicon in which an impurity of 1019 cm−3 or more is doped, and is used by being optically connected in series with an optical waveguide including a core (105) composed of silicon. The optical absorption core (103) is sufficient provided that, at least, an impurity of around 1019 cm−3 is doped therein. For example, its impurity concentration is sufficient provided that it falls within a range of 1019-1020 cm−3. The existence of this impurity causes absorption of light in the optical absorption core (103).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.