Coherent WDM transmission using quantum-dash mode-locked laser diodes as multi-wavelength source and local oscillator
Year: 2019
Type: article
Abstract: 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 GHz. 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 × 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.
Source: Optics Express
DOI: 10.1364/oe.27.031164
Authors: Juned N. Kemal, Pablo Marin-Palomo, Vivek Panapakkam, Philipp Trocha, Stefan Wolf, Kamel Merghem, François Lelarge, Abderrahim Ramdane, Sebastian Randel, Wolfgang Freude, Christian Koos
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W2979534532