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. 21, 2006
Filed:
Dec. 28, 2000
Adel Asseh, Stockholm, SE;
Simon Sandgren, Stockholm, SE;
Anders Henriksson, Hässelby, SE;
Mikael Bergman, Järfälla, SE;
Raoul Stubbe, Stocksund, SE;
Bengt Sahlgren, Saltsjö-Boo, SE;
Ulf Öhlander, Hässelby, SE;
Adel Asseh, Stockholm, SE;
Simon Sandgren, Stockholm, SE;
Anders Henriksson, Hässelby, SE;
Mikael Bergman, Järfälla, SE;
Raoul Stubbe, Stocksund, SE;
Bengt Sahlgren, Saltsjö-Boo, SE;
Ulf Öhlander, Hässelby, SE;
Proximion Fiber Systems AB, Kista, SE;
Abstract
The invention relates to methods and arrangements for channel balancing of a wavelength division multiplexed optical signal. Channel balancing according to the invention is performed by using a resonator that provides a selection region in which a selected channel has a substantially increased poser density relative to channels out of resonance. The selected channel is attenuated a desired amount, i.e. a desired amount of power is removed therefrom, by adjusting the properties of the selection region. In a preferred embodiment, attenuation is achieved by adjusting the selection region such that destructive interference is obtained for the selected channel in a fiber carrying tile multiplexed optical signal.