Quantum dot based semiconductor waveguide devices
US7769062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Mar 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34373
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and devices for providing a multiwavelength laser which may be used for multicasting and other optical communications uses. The present invention provides a quantum dot based multiwavelength laser with a monolithic gain block. The Fabry-Perot gain block has both upper and lower InP cladding layers. The laser system has a middle quantum dot layer with multiple stacked layers of InAs quantum dots embedded in InGaAsP. When provided with a CW injection current, the laser system produces an output spectra with equally spaced multiple emission peaks. With an input optical data signal applied to the laser system, the laser system duplicates the data in the input signal across multiple different wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.