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. 18, 2014
Filed:
Feb. 27, 2009
Arthur James Lowery, Kew, AU;
Liang Bangyuan Du, Clayton, AU;
Arthur James Lowery, Kew, AU;
Liang Bangyuan Du, Clayton, AU;
Ofidium Pty. Ltd., Melbourne, Victoria, AU;
Abstract
A method of generating an information-bearing optical signal () from input digital information () includes generating () an information-bearing electrical signal comprising an in-phase (I) component and a quadrature (Q) component. Each of the components has a predetermined baseband bandwidth requirement (B). The I and Q signal components are combined () with corresponding I and Q components of a radio frequency (RF) carrier (). The carrier has a central frequency greater than the signal bandwidth requirement (B). An optical source is modulated () with the combined I and Q signal and carrier components, in order to produce a modulated optical signal () which comprises an optical carrier corresponding with the RF carrier, and substantially only a single information-bearing optical sideband in an optical frequency domain, corresponding with the information-bearing electrical signals. Transmitters implementing the method are also disclosed.