Abstract: A plug part for a releasable plug-type connection of light waveguides that can be manufactured with little outlay is provided which comprises a capillary having an acceptance opening for the light waveguide, a plug cylinder in which the capillary is disposed such that its acceptance opening is coaxially aligned relative to the outside circumference of the plug cylinder and a hardenable bonding agent which is introduced into the annular gap between the capillary and plug cylinder. The capillary is accepted between two centering tips for the precise adjustment in the plug cylinder. This adjustment ensues in a guide prism in which two cylindrical centering tip carriers with coaxially attached centering tips and the plug cylinder with the capillary loosely contained therein are placed, whereby the two centering tip carriers have the same outside diameter as the plug cylinder.

Abstract: A connector part having a cylindrical receptacle part having at least one press-on region of an enlarged, outside diameter and a sleeve which is slipped on to the press-on region to form a press fit and cause a radial clamping of the receptacle part on an optical fiber inserted therein. The slipped-on sleeve covers the entire region in which the two optical fibers to be connected have been centered. Preferably, the bore receiving the two stripped optical fibers has enlarged portions for receiving jacketed portions of the light waveguides, which are in the pressed-on region so that the sleeve will clamp the to fibers in a connection and also clamp the adjacent cladded portions of the waveguides so that the connection can be subjected to tensile stresses.

Abstract: An optical branching unit and method for producing the unit which comprises an optical branching element having a body portion with at least one surface having the waveguides extending thereto, said surface and the waveguides being polished optically flat to extend perpendicular to the longitudinal axis of the waveguides, each of the units being secured in a housing, which has a port associated with each optical waveguide and a device for receiving and holding an external waveguide being axially aligned with the axis of each optical waveguide so that an external waveguide can be held in an abutting and aligned contact with the polished optical waveguide of the polished optical flat surface to form an optical waveguide communication with the waveguide of the branch element.