Multiple distributed feedback laser devices
US7864824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2009 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Jul 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34306
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a multiple distributed feedback laser device. The laser device includes an active layer, a first diffraction grating, and a second diffraction grating. The substrate includes a first distributed feedback region, a modulation region, and a second distributed feedback region. The first diffraction grating is coupled to the active layer in the first distributed feedback region. The second diffraction grating is coupled to the active layer in the second distributed feedback region. In addition, the laser device includes a first micro heater and a second micro heater. The first micro heater supplies heat to the first diffraction grating. The second micro heater supplies heat to the second diffraction grating. The first micro heater and the second micro heater are controlled independently from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.