Patent ID: 7232259

Claim:
An optical plug-in connection for the connection of polarization-maintaining optical fibers, comprising an optical plug-in connection of at least two plug-in connectors and a coupler into which the plug-in connectors can be plugged from opposite sides, the optical fibers that are to be connected being fixed by the fiber end in a ferrule in each of the plug-in connectors, the coupler having a guiding device which the ferrules enter from opposite sides when the plug-in connectors are plugged into the coupler, and means for the angular alignment of the ferrules with one another wherein: the aligning means are formed in such a way that the ferrules are aligned with respect to their angular position at the guiding device when the plug-in connectors are plugged into the coupler; the guiding device comprises a longitudinally slotted sleeve held in a sleeve receptacle; the coupler is made up of two coupler housing parts; and the sleeve receptacle is held between the coupler housing parts with play but in a substantially rotationally fixed manner.