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:
Feb. 04, 2003
Filed:
Feb. 14, 2001
John Arthur Fee, Richardson, TX (US);
Avanex Corporation, Fremont, CA (US);
Abstract
The present invention provides a method and system for compensating for chromatic dispersion in an optical network. The method and system includes analyzing an optical signal at a first location in the optical network and determining if an eye of the optical signal has a desired shape at the first location. The method and system further includes automatically adjusting a dispersion of the optical signal at a second or at any location in the optical network if the optical signal does not have the desired shape; providing feedback concerning the shape of the adjusted optical signal at the first location; and automatically readjusting the dispersion of the optical signal at the second location based upon the feedback until the optical signal has the desired shape at the first location. The method and system of the present invention automatically compensates for dispersion in an optical system. This saves the network operator considerable time and raises the reliability. The method and system could be used to provide a continuous range of dispersion compensation to particular locations in the network or to the network as a whole, and to store information in a database to be used to produce dispersion maps for the network. It also provides the ability to dial in dispersion for changing fiber characteristics and pre-tuning in a switching of wavelengths from one system to another. Finally, it avoids extraordinary expense by allowing the approximation of the installed fiber dispersion without requiring field measurements.