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:
Jul. 12, 2016
Filed:
Aug. 11, 2014
Alcatel-lucent Usa Inc., Murray Hill, NJ (US);
Joseph K. Kakande, Jersey City, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
We disclose an optical transport system configured to transport an additional data stream using hierarchical modulation. In an example embodiment, copies of the additional data stream are encoded onto enhancement layers of multiple hierarchically modulated optical waves transported through the system in a multiplexed manner. An optical receiver coupled to a remote end of the optical transport link is configured to use this redundant transmission of the additional data stream to improve the bit-error rate thereof, e.g., by first extracting the signal components corresponding to the enhancement layers of the different hierarchically modulated optical waves and then combining the extracted signal components in a manner that tends to reduce, through averaging, the relative magnitude of noise in the combined signal compared to that in the individual extracted signal components. The disclosed signal-transmission format is suitable for various types of multiplexing, e.g., any combination of space-, wavelength-, and polarization-division multiplexing.