Bit- and Power-Loading—A Comparative Study on Maximizing the Capacity of RSOA Based Colorless DMT Transmitters
Source abstract
Abstract
We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters. Three interesting reflective semiconductor optical amplifier (RSOA) based colorless transmitter configurations are compared: First, an amplified spontaneous emission (ASE) spectrum-sliced source; second, a self-seeded RSOA fiber cavity laser (FCL) and third, an externally seeded RSOA. With bit- and power-loaded DMT, we report record high line rates of 6.25, 20.1 and 30.7 Gbit/s and line rates of 4.17, 10.1 and 24.5 Gbit/s in a back-to-back and in a 25 km nonzero dispersion shifted fiber (NZDSF) transmission experiments for the three transmitter configurations, respectively. In all the experiments, BER (bit error ratios) below an FEC (forward error correction) limit of 7.5 × 10−3 were achieved.
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Research context
OpenAlex topics: Optical Network Technologies · Advanced Photonic Communication Systems · Optical Wireless Communication Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Electromagnetic Fields (IEF), ETH Zurich, 8092 Zurich, Switzerland
Now with RANOVUS GmbH, Nordostpark 07, 90411 Nuremberg, Germany
Thales Research and Technology and CEA Leti, Route de Nozay, a Joint Lab of Alcatel-Lucent Bell Labs France, III-V Lab, 91460 Marcoussis, France
Now with Huawei Technologies Duesseldorf GmbH, Optical & Quantum Laboratory, Riesstrasse 25-C3, 80992 Munich, Germany
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