Laser device for optical packet data transmission in burst mode systems

摘要

The invention relates to a laser device for optical packet data transmission. Such devices are basically known in the art and comprise a laser light source (130) for outputting a laser light beam and a laser driver (120) for driving said laser light source (130). The laser device further comprises an optical modulator means (140) for modulating a packet data stream onto said laser light beam. If a plurality of laser devices is provided in a TDM-system and a plurality of modulator means (140) output a logical zero simultaneously all residual lights in one channel are summed up and disadvantageously the level detected on the channel might wrongly be interpreted as logical one. In order to avoid that problem, the invention proposes to provide a filter means (114,114') within said laser device for generating an envelope signal representing the data packets (dp) in said packet data stream and to provide a switching means (114) for switching the laser driver (120) and the laser light source (130) in response to said envelope signal.