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:
Nov. 21, 2017
Filed:
Mar. 03, 2014
Xieon Networks S.a.r.l., Luxemburg, LU;
Erich Gottwald, Holzkirchen, DE;
Harald Rohde, Munich, DE;
Xieon Networks S.a.r.l., Senningerberg, LU;
Abstract
An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM, MZM) generates single sideband data signals. A control unit () generates additional optical single sideband pilot signals (PS, PS) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS, PS) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit () selects control signals (CS, CS, CS) and controls the IQ modulator via its bias ports () till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM, MZM) and the phase difference (ΔΦ) between their output signals is optimized.