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:
Jul. 09, 2002
Filed:
Dec. 21, 1999
Claus F. Pedersen, Frederiksberg, DK;
DSC Communications A/S, , DK;
Abstract
In a method of amplitude equalization of a plurality of optical signals having mutually different wavelengths, the optical signals are launched into a first end of an optical fiber ( ). The optical signals are amplified, before being launched into the fiber ( ), to a level at which at least one of the signals exceeds a stimulated Brillouin scattering (SBS) threshold value (T ) characteristic of the fiber, so that part of the signal energy in the fiber is transferred to a Stokes signal propagating in the fiber ( ) in a direction opposite to said optical signals. An apparatus for amplitude equalization of a plurality of optical signals having mutually different wavelengths comprises an optical fiber ( ) having an input end ( ) where said optical signals may be supplied to the fiber, and an output end ( ) where said optical signals may be tapped from the fiber after equalization. The fiber ( ) has a characteristic stimulated Brillouin scattering (SBS) threshold value (T ) which corresponds to a preselected maximum amplitude value of the optical signals on the output end ( ) of the fiber.