Grating-coupled surface-emitting superluminescent device
US4952019A · kind A · utility
15Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/187
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A superluminescent diode has one end coupled to a DBR having a grating and the other end has a reflective coating. A broadlight spectrum is emitted for reduced speckle interference and phase noise when used in applications such as a gyroscope. The diode can be of the "P side down" type for good heat dissipation during continuous wave operation. Two gratings can be used in order to reduce beam divergence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.