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:
Dec. 30, 2014
Filed:
Jul. 24, 2012
Chandrasekhar Sethumadhavan, Matawan, NJ (US);
Xiang Liu, Marlboro, NJ (US);
Peter J. Winzer, Aberdeen, NJ (US);
Andrew Chraplyvy, Matawan, NJ (US);
Chandrasekhar Sethumadhavan, Matawan, NJ (US);
Xiang Liu, Marlboro, NJ (US);
Peter J. Winzer, Aberdeen, NJ (US);
Andrew Chraplyvy, Matawan, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
An optical transmitter configured to perform digital signal equalization directed at mitigating the detrimental effects of a frequency roll-off in the transmitter's optical I-Q modulator. In various embodiments, a frequency-dependent spectral-correction function used for the digital signal equalization can be constructed to cause the spectrum of the modulated optical signal generated by the transmitter to have a desired degree of flatness in the vicinity of an optical carrier frequency and/or to at least partially mirror the frequency roll-off in the optical I-Q modulator.