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:
Dec. 18, 2012
Filed:
Apr. 20, 2010
Willie W. NG, Agoura Hills, CA (US);
George C. Valley, Los Angeles, CA (US);
George Anthony Sefler, Redondo Beach, CA (US);
Willie W. Ng, Agoura Hills, CA (US);
George C. Valley, Los Angeles, CA (US);
George Anthony Sefler, Redondo Beach, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Aerospace Corp., Los Angeles, CA (US);
Abstract
A method of performing analog to digital conversation of an analog signal V(t), the method including the steps of: utilizing both of the complementary arms of an electro-optic modulator to recover the analog input signal V(t), while using only one time-stretch element and one λ-demultiplexer after the electro-optic modulator. The single time-stretch element and one λ-demultiplexer serve to stretch and demultiplex the signals from both of the complementary output arms of the electro-optic modulator thereby improving and simplifying post-processing algorithms used to correct for static distortions and nonlinearities that originate from imperfect photonic hardware. Double-balanced photoreceivers are preferably coupled to outputs of the single λ-demultiplexer. The single time-stretch element is preferably implemented by a chirped fiber grating. Apparatus for carrying out the method is described.