Alcatel

Draka Comteq B.v.

Kamel Dougdag

Eric Lainet

Jean-François Bourhis

An anti-PMD system comprises a pulley which oscillates in rotation and applies a torsion torque alternately in the clockwise direction and in the counterclockwise direction to an optical fiber during drawing of the optical fiber to reduce its PMD. A portion of a peripheral external surface of the pulley intended to be in contact with the optical fiber during drawing is convex.

Anti-PMD system for optical fibers

The invention provides an anti-PMD system comprising: an anti-PMD pulley () over which an optical fiber () is to roll and which is mounted to rotate about an axis of rotation (ar); and at least two optical fiber guide devices () situated on either side of the anti-PMD pulley (); the axis of rotation (ar) of the anti-PMD pulley () being stationary; the only degree of freedom of the anti-PMD pulley () being rotation about the axis of rotation (ar) of the anti-PMD pulley (); and at least one of the guide devices () being movable in translation in a translation direction (dt) that is not orthogonal to the axis of rotation (ar) of the anti-PMD pulley ().

Growing community of inventors

Andresy, France

Kamel Dougdag