Patent ID: 7488115

Claim:
A plug for creating an optical waveguide plug-in connector for an optical waveguide cable having at least one optical waveguide, said plug comprising a housing, a ferrule holder connected to the optical waveguide and arranged in the housing, and comprising at least one locking device arranged on the outside on a narrow side of the housing, wherein the housing together with the at least one locking device has the outer form of an RJ-45 plug and is at least partially open at its front and at its back, said housing having an interior surrounded by the narrow sides running parallel to the longitudinal axis of the plug-in connector, and having at least one catch spring arranged on the outside on at least one narrow side of the housing as the locking device, for engagement into a coupler, whereby the catch spring is resiliently connected to the housing, said housing having a ferrule holder arranged in the interior for each optical waveguide that passes through the back of the housing into the interior, whereby the ferrule holder, on its side facing the front of the housing, has a recess for each coupling ferrule and a bore that runs parallel to the longitudinal axis of the plug-in connector from its side facing the back of the housing through the center of the recess; wherein the diameter of the bore in the ferrule holder is configured so as to be graduated at least once in the direction of the lengthwise axis of the plug-in connector.