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:
Feb. 24, 2004
Filed:
Jul. 20, 2000
Applicant:
Inventors:
David L. Rollins, Hawthorne, CA (US);
Bruce A. Ferguson, Redondo Beach, CA (US);
Assignee:
Northrop Grumman Corporation, Redondo Beach, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/000 ; H04B 1/004 ;
U.S. Cl.
CPC ...
H04B 1/000 ; H04B 1/004 ;
Abstract
An analog optical link ( ) that provides high-fidelity over bandwidths greater than 1 GHz is presented. The analog optical link ( ) includes a transmitter ( ) having an optical modulator ( ) and a receiver ( ) having an optical demodulator ( ). In one embodiment, the modulator ( ) is a phase modulator ( ) and particularly a pre-emphasis phase modulator ( ) that operates as a frequency modulator at low frequencies. The demodulator ( ) is a frequency demodulator ( ) that includes a feed-forward function for cancelling noise.