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:
Oct. 03, 2006
Filed:
Dec. 05, 2003
Ornan Gerstel, Los Altos, CA (US);
Valerio Viscardi, Paderno Dugnano, IT;
Stefano Piciaccia, Milan, IT;
Gianpaolo Barozzi, Cinisello Balsamo, IT;
Ornan Gerstel, Los Altos, CA (US);
Valerio Viscardi, Paderno Dugnano, IT;
Stefano Piciaccia, Milan, IT;
Gianpaolo Barozzi, Cinisello Balsamo, IT;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A efficient and inexpensive optical WDM network architecture with add and drop couplers. Add couplers and drop couplers connected to a network optical fiber with wavelength blocker units which filter out optical signals at selected wavelengths on the optical fiber. The wavelength blocker units are distributed among the add and drop couplers so that each segment of the optical fiber between pairs of neighboring wavelength blocker units has at least three add and drop couplers. More specifically, each segment has the following relationship:THRU+ADD+DROP+LOCAL≦TOTALwhere THRU is the number of channels passing through the segment; ADD is the number of channels added within the segment; DROP the number of channels dropped within the segment; LOCAL the number of channels confined within the segment; and TOTAL is the total capacity of the optical fiber.