Wolfgang Pöhlmann

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An open converged metro-access network approach allows for sharing optical layer resources like fibers and optical spectrum among different services and operators. We demonstrated experimentally the feasibility of such a concept by the simultaneous operation of multiple services showing different modulation formats and multiplexing techniques. Flexible(More)
Thermally tunable burst-mode directly modulated lasers (DMLs) are the lowest-cost choices for the optical network units in time and wavelength division multiplexed passive optical network (TWDM-PON) systems. However, a fast wavelength drift caused by the burst-mode operation of this directly modulated distributed feedback laser needs to be considered. The(More)
The convergence of optical metro networks and access networks extends the area of network coverage, and therefore requires the use of optical amplifiers. For this purpose, semiconductor optical amplifiers (SOA) would be attractive, because they are broadband, can be centered between 1250 nm and 1600 nm, and because they are cheap in production and(More)
Optical line termination transmitter (Tx) and receiver (Rx) concepts using a semiconductor optical amplifier (SOA) for the next generation of passive optical networks (NG-PON2) are experimentally compared. In general, a single SOA per wavelength channel at the Tx and a configuration comprising a single SOA followed by avalanche photodiodes (APDs) at the Rx(More)
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