Alcatel

Wilhelm Reiners

Franz-Peter Bartling

Jurgen Rosenkranz

Hans-Jurgen Lysson

Hans-J&uuml;rgen Lysson

Bertram Glessner

J&uuml;rgen Pasch

Ronald G Sommer

An optical fiber ( ) has an outer coating ( ) enclosing the cladding ( ) and the fiber core ( ). The coating has one or more plastic layers and a color coding in the form of an annular marking on or in the outermost plastic layer. The annular marking is open colored rings.

Color-coded optical fiber

An apparatus is proposed for controlling the coating thickness of an optical fiber (2) passing sequentially, in that order, from a unit (1) for fabricating the fiber (2) through a cooling unit (3), a coating unit (4) and along a device (5) which determines the diameter of the fiber. The apparatus includes a control element (14) for controlling a control device (15, 16) as a function of the measured diameter in such a way that the thickness of the coating corresponds to a target value, wherein the control device (15, 16) is placed before the coating unit (4) when viewed in the transport direction of the fiber (2), and the control device (15,16) adjusts the temperature of the fiber (2). Also described is a method for controlling the coating thickness.

Apparatus and method for controlling the coating thickness of an optical

A device for applying a coating material to an optical fiber (1) has a coating nozzle (7) arranged in a nozzle holder (3) and a coating chamber (17) located before the coating nozzle (7) in the direction of travel of the optical fiber (1). Beyond that the device has at least one inlet channel (19) which is connected to the coating chamber (17), as well as a number of feed lines (23) for different coating materials. A connection can be established between one of the feed lines (23) and the at least one inlet channel (19), so that a change of coating material can be made in a simple manner, particularly a color change, without costly conversion and cleaning operations.

Device for applying a coating material to an optical fiber

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Wegberg, Germany

Wilhelm Reiners