Djorn Karnick

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We demonstrate a remotely seeded flexible passive optical network (PON) with multiple low-speed subscribers but only a single optical line terminal transceiver operating at a data rate of 31.25 Gbits/s. The scheme is based on a colorless frequency division multiplexing (FDM)-PON with centralized wavelength control. Multiplexing and demultiplexing in the(More)
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)
In this paper the authors describe a novel system on chip (SoC) that is especially developed for digital signal processing of high-speed orthogonal frequency division multiplexing (OFDM) signals with data rates up to gigabits per second. Besides offering a new degree of freedom for the tradeoff between flexibility and performance during runtime, the modular(More)
We investigate the performance of a fiber-based OFDM transmission system for wireless backhauling with a target data rate of 2.5...10 Gbit/s using directly modulated lasers. Newly developed semiconductor DFB lasers in index and complex coupled curved stripe technology as well as lasers with ridge waveguide resonators were experimentally characterized and(More)
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