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:
Sep. 11, 2007
Filed:
Nov. 03, 2003
Willie NG, Agoura Hills, CA (US);
Andrew Walston, Toledo, OH (US);
Robert R. Hayes, Calabasas, CA (US);
Willie Ng, Agoura Hills, CA (US);
Andrew Walston, Toledo, OH (US);
Robert R. Hayes, Calabasas, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
An architecture that enables one to realize a FIR transversal filter with apodized, interlaced bipolar tap coefficients (a). The tap coefficients, a, are varied via the control of the optical powers emitted by an array of WDM laser sources. Also, a filter architecture where tap coefficients can be agilely reconfigured in both polarity and magnitude. One chirped fiber-grating may be used to implement a series of wavelength-dependent tap-weights. The filter designs can be utilized to eliminate the low-pass response centered at DC, allowing one to place the center frequency (f)of the first passband at a targeted intermediate frequency (IF).