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. 11, 2006
Filed:
Feb. 28, 2002
Isaac Shpantzer, Bethesda, MD (US);
Yehouda Meiman, Rishon Letzion, IL;
Michael Tseytlin, Bethesda, MD (US);
Olga Ritterbush, Rockville, MD (US);
Aviv Salamon, Washington, DC (US);
Peter Feldman, Short Hills, NJ (US);
Alper Demir, Istanbul, TR;
Peter Kinget, Summit, NJ (US);
Nagendra Krishnapura, Hoboken, NJ (US);
Jaijeet Roychowdhury, Minneapolis, MN (US);
Isaac Shpantzer, Bethesda, MD (US);
Yehouda Meiman, Rishon Letzion, IL;
Michael Tseytlin, Bethesda, MD (US);
Olga Ritterbush, Rockville, MD (US);
Aviv Salamon, Washington, DC (US);
Peter Feldman, Short Hills, NJ (US);
Alper Demir, Istanbul, TR;
Peter Kinget, Summit, NJ (US);
Nagendra Krishnapura, Hoboken, NJ (US);
Jaijeet Roychowdhury, Minneapolis, MN (US);
CeLight, Inc., Silver Spring, MD (US);
Abstract
A system for optical communication send optical signals over a plurality of wavelength channels. Each wavelength channel comprises a number of orthogonal subchannel frequencies which are spaced apart from one another by a predetermined amount. Each of the subchannel frequencies is modulated with data from a data stream. The data modulation scheme splits a subchannel frequency code into H and V components, and further processes the components prior to modulation with data. The various data-modulated subchannels are then combined into a single channel for transmission. The received signals are detected and demodulated with the help of a symbol timing recovery module which establishes the beginning and end of each symbol. A polarization mode distortion compensation module at the receiver is used to mitigate the effects to polarization more distortion in the fiber.