Journal
OPTICS EXPRESS
Volume 27, Issue 22, Pages 31164-31175Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.031164
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Funding
- FP7 European Research Council (ERC), Starting Grant 'EnTeraPIC' [280145]
- H2020 ERC, Consolidator Grant 'TeraSHAPE' [773248]
- EU-FP7 project BIG PIPES [619591]
- Alfried Krupp von Bohlen und Halbach-Stiftung
- Helmholtz International Research School for Teratronics (HIRST)
- Karlsruhe School of Optics & Photonics (KSOP)
- Erasmus Mundus Joint Doctorate program Europhotonics [159224-1-2009-1-FR-ERA MUNDUS-EMJD]
- Deutsche Forschungsgemeinschaft (DFG)
- Collaborative Research Center 'Wave Phenomena: Analysis and Numerics' [CRC 1173]
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Quantum-dash (QD) mode-locked laser diodes (MLLD) lend themselves as chip-scale frequency comb generators for highly scalable wavelength-division multiplexing (WDM) links in future data-center, campus-area, or metropolitan networks. Driven by a simple DC current, the devices generate flat broadband frequency combs, containing tens of equidistant optical tones with line spacings of tens of GHQ. Here we show that QD-MLLDs can not only be used as multi-wavelength light sources at a WDM transmitter, but also as multi-wavelength local oscillators (LO) for parallel coherent reception. In our experiments, we demonstrate transmission of an aggregate net data rate of 3.9 Tbit/s (23 x 45 GBd PDM-QPSK, 7% FEC overhead) over 75 km standard single-mode fiber (SSMF). To the best of our knowledge, this represents the first demonstration of a coherent WDM link that relies on QD-MLLD both at the transmitter and the receiver. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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