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:
Jun. 22, 2004
Filed:
Mar. 16, 2001
Applicant:
Inventors:
Nima Ahmadvand, Ottawa, CA;
Hamid Hatami-Hanza, Ottawa, CA;
Assignee:
Peleton Photonic Systems Inc., Ottawa, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/28 ; H04J 1/402 ;
U.S. Cl.
CPC ...
G02B 6/28 ; H04J 1/402 ;
Abstract
WDM demultiplexers are provided utilizing, for example, cascaded asymmetric MZI filters, wherein the (asymmetric) differential delay is such that at the output of the first stage MZI demultiplexes the WDM channels in groups of two at its output. The result is a relaxed specification for the frequency response of the filters.
Ahmadvand, Nima. (2004). Mach-zehnder based filter demultiplexers and method (U.S. Patent No. 6754411). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6754411
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