Schott Ag

Wolfgang Eis

Lothar Willmes

Uwe Kolberg

Thomas Weingärtner

Markus Kappel

Axel Curdt

Thomas Henrich

Wolfram Gehenn

A device for making up a plurality of synchronously produced individual optical fibers includes a drawing installation for drawing the fibers and a take-up winder for winding up the fibers on a take-up spool. The drawing installation provides an identical and constant drawing rate for each of the fibers. The take-up winder has a compensating device to compensate for differences in speed of the fibers between the drawing installation and the take-up spool. Fluctuations of the fiber diameter during production of the fibers are avoided and the fibers are passed at a substantially constant rate to the take-up winder. A fiber bundle can be made up without influencing the drawing rate, thereby also avoiding reactions on the melting process when drawing the fibers from a heated preform. A method for making up a plurality of synchronously produced individual optical fibers is also provided.

Device and method for drawing optical fibers

Step-index optical waveguides are made of multicomponent glass containing a core glass and an outer glass which entirely surrounds the core class. A fiber-optic cable for conducting electromagnetic radiation, contains at least one bundle of individual fibers which encompass the step-index optical waveguides that are made of multicomponent glass containing a core glass and an outer glass that entirely surrounds the core glass on the circumferential wall thereof. These step-index optical waveguides provide great transmission capacity for transmitting data while keeping the transfer characteristics sufficiently durable. Furthermore, the fiber-optic cable is resistant against physical and chemical environmental influences and be protected against radical ambient chemicals. These aims are achieved by the fact that the outer glass of the step-index optical waveguides is provided with a material composition which is largely free from chemical interactions with the core glass when the fibers are drawn and is chemically inactive towards the plastic jacket.

Fiber-optic cable

Growing community of inventors

Niedernhausen, Germany

Wolfgang Eis