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. 03, 2009
Filed:
Dec. 08, 2003
Xiang Liu, Marlboro, NJ (US);
Lothar Benedict Erhard Josef Moeller, Hazlet, NJ (US);
Xing Wei, New Providence, NJ (US);
Chongjin Xie, Marlboro, NJ (US);
Xiang Liu, Marlboro, NJ (US);
Lothar Benedict Erhard Josef Moeller, Hazlet, NJ (US);
Xing Wei, New Providence, NJ (US);
Chongjin Xie, Marlboro, NJ (US);
Alcatel-Lucent USA Inc., Murray Hill, NJ (US);
Abstract
An optical receiver adapted to process an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder. The decoder processes an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder integrates the electrical signal using a sampling window and compares the integration result with a decision threshold value. In one configuration, the width of the sampling window and the decision threshold value are selected based on the eye diagram and noise distribution function, respectively, corresponding to the optical signal. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by improving dispersion tolerance and/or reducing optical power corresponding to a selected bit error rate value.