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:
Jul. 01, 2014
Filed:
Mar. 08, 2010
Howard Rideout, St. John's, CA;
Joe Seregelyi, Ottawa, CA;
Ping LU, Ottawa, CA;
Stéphane Paquet, Gatineau, CA;
Jianping Yao, Ottawa, CA;
Stephen J. Mihailov, Ottawa, CA;
John Oldham, Ottawa, CA;
Mario Caron, Gatineau, CA;
Howard Rideout, St. John's, CA;
Joe Seregelyi, Ottawa, CA;
Ping Lu, Ottawa, CA;
Stéphane Paquet, Gatineau, CA;
Jianping Yao, Ottawa, CA;
Stephen J. Mihailov, Ottawa, CA;
John Oldham, Ottawa, CA;
Mario Caron, Gatineau, CA;
Abstract
A filter and a method of filtering a high frequency electrical signal using photonic components is disclosed. The filter has a serially fiber-coupled laser source, a modulator, a filter, and a photodetector. The electrical signal is applied to the modulator. The modulated light propagates through the filter which is constructed to pass not only a modulated sideband, but also at least a fraction of light at the carrier frequency of the laser. The photodetector detects a signal at the beat frequency between the carrier and sideband signals, after both signals have propagated through the filter. As a result, a separate optical branch for light at the carrier frequency is not required, which considerably simplifies the filter construction and makes it more stable and reliable.