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. 14, 2006
Filed:
Sep. 27, 2000
Lars Egnell, Stockholm, SE;
Bengt Johansson, Stockholm, SE;
Fredrik Liden, Stockholm, SE;
Fredrik Lindgren, Stockholm, SE;
Dag Bonnedal, Stockholm, SE;
Ola Hulten, Stockholm, SE;
Lars Egnell, Stockholm, SE;
Bengt Johansson, Stockholm, SE;
Fredrik Liden, Stockholm, SE;
Fredrik Lindgren, Stockholm, SE;
Dag Bonnedal, Stockholm, SE;
Ola Hulten, Stockholm, SE;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
An add/drop node of an optical WDN-network which has two fiber paths for light of a plurality of channels propagating in opposite directions comprises two add/drop modules () for each of the channels. All the modules are identically constructed. Each module comprises an add device () for adding light to one of the paths and a drop device () for deflecting a portion of light from a second one of the paths. A module comprises a house () enclosing the add device and the drop device. A first fixed connector () is attached to the house for connection in the first path and to a an optical fiber () which extends freely from the house and has a first free connector () at its free end to be attached to the fixed connector of a neighboring add/drop module for continuing the first path through the considered add/drop module to the neighboring module. In the same way a second fixed connector is attached to the house for connection in the second path and to a second optical fiber which extends freely from the house and has a second free connector at its free end to be attached to the fixed second connector of a neighboring add/drop module for continuing the second path through the considered add/drop module to the neighboring module.