Siemens Aktiengesellschaft

Torsten Wipiejewski

Volker Plickert

J&uuml;rgen Blank

A transmission device contains a plurality of laser transmitters that can be driven individually with a driving current and output optical signals and whose operating point is set via a respective bias current. Each bias current has an individual correction current impressed on it. The correction currents are dimensioned such that, for the same bias current, the laser transmitters have an identical or essentially more uniform average optical output power at the desired operating point.

Optical transmission device

A vertical resonator laser diode has an active layer sequence for generating a laser radiation, an electrical contact layer, and a current aperture formed of a plurality of aperture layers with current passage openings of different sizes. The sizes of the current passage openings of the aperture layers increase in a direction away from the active layer sequence toward the electrical contact layer. A method for producing a vertical resonator laser diode is also provided.

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Wuppertal, Germany

Torsten Wipiejewski