Integrated light absorber
US6002514A · kind A · utility
8Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12126
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The integrated light absorber comprises a light chamber integrated in an optical chip, the chamber having upper and lower walls lying substantially parallel to the chip and peripheral walls extending there between and a light input port in a peripheral wall for receiving light to be absorbed, e.g. from a rib waveguide. At least one of the walls have light absorbing properties and the chamber is shaped so that the majority of light which enters the chamber through the light input port undergoes multiple reflections and so is absorbed by the walls of the chamber. Circular and star-shaped chambers are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.