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. 02, 2011
Filed:
Sep. 25, 2009
Jiaren Liu, Ottawa, CA;
Zhenguo LU, Ottawa, CA;
Sylvain Raymond, Ottawa, CA;
Philip Poole, Ottawa, CA;
Pedro Barrios, Ottawa, CA;
Daniel Poitras, Ottawa, CA;
Jiaren Liu, Ottawa, CA;
Zhenguo Lu, Ottawa, CA;
Sylvain Raymond, Ottawa, CA;
Philip Poole, Ottawa, CA;
Pedro Barrios, Ottawa, CA;
Daniel Poitras, Ottawa, CA;
National Research Council of Canada, Ottawa, ON, CA;
Abstract
A multi-band (multi-color) multiwavelength mode locked laser diode is provided by dynamic phase compensation of a quantum dot active medium. The laser diode is provided with a PIN diode structure where the active medium consists of a plurality of layers of quantum dots such as those produced by self-assembly from known chemical beam epitaxy methods. The multiplicity of bands may be produced by AC Stark splitting, frequency selective attenuation, or by the inclusion of multiple different layers having different, respective, peak ASE emissions. Dispersion compensation within laser facets, waveguides, and the optically active media permit the selection of a fixed dispersion within the cavity. A dynamic group phase change induced by the AC Stark effect permits compensation of the fixed dispersion sufficiently to produce an intraband mode-locked laser. Even interband mode locking was observed.