Abstract: An optical waveguide splice (SP) is subjected for a prescribable test period to a tensile stress (F), while the light (SL) is launched upstream of the splice (SP) and light (EL) is coupled out downstream of the splice (SP) and the optical power (a) thereof is determined continuously as a function of the tensile stress (F).

Abstract: A method of joining two groups of light waveguides in a splicing appliance, which includes applying a mechanical reinforcing carrier member between the two parts subsequent to the splicing operation and prior to removing the spliced waveguides from the splicing appliance.

Abstract: An apparatus for performing measurements on a plurality of light waveguides comprises an arrangement for coupling distinguishably fed optical signals into each of the waveguides and measuring each of the distinguishable signals from the waveguides by using flexural couplers. In one embodiment, the distinguishable signals are obtained by utilizing modulated signals of different modulations, or different frequencies. In another embodiment, the signals are sequentially applied in a chronological order to the waveguides and are separately evaluated.

Abstract: A measuring device for an optical medium employs a single, common receiver which is allocated to either of two transmitters which are stationarily attached to the measuring device at a distance from one another. The common receiver is held at the measuring device by a mechanical displacement guide such that it can be optionally positionally allocated to one of the two respective transmitters.