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. 07, 2006
Filed:
Aug. 08, 2002
Thomas Andrew Strasser, Warren, NJ (US);
Per Bang Hansen, Rumson, NJ (US);
Thomas Andrew Strasser, Warren, NJ (US);
Per Bang Hansen, Rumson, NJ (US);
Meriton Networks US Inc., Wilmington, DE (US);
Abstract
A WDM optical transmission system is provided that operates at a plurality of channel wavelengths. The system includes at least three nodes at which any one or more of the channel wavelengths can be added or dropped. At least three optical transmission links interconnect the nodes. Each link includes a single waveguide over which travel oppositely-directed WDM signals having channel wavelengths that are interleaved with one another in a pairwise manner. A majority of the optical transmission links each have an optical span loss that corresponds to a level of coherent crosstalk between a reflected channel at a given wavelength co-propagating with a channel at the given wavelength prior to isolating one of the adjacent channels in a node that is less than a level of coherent crosstalk that would otherwise arise if a unidirectional transmission format were employed over a single waveguide in the same system.