The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
Mar. 20, 2008
Zhenguo LU, Ottawa, CA;
Jiaren Liu, Ottawa, CA;
Sylvain Raymond, Ottawa, CA;
Philip Poole, Ottawa, CA;
Pedro Barrios, Ottawa, JP;
Daniel Poitras, Ottawa, CA;
Zhenguo Lu, Ottawa, CA;
Jiaren Liu, Ottawa, CA;
Sylvain Raymond, Ottawa, CA;
Philip Poole, Ottawa, CA;
Pedro Barrios, Ottawa, JP;
Daniel Poitras, Ottawa, CA;
National Research Council of Canada, Ottawa, CA;
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.