no code implementations • 12 Dec 2023 • Lars E. Kruse, Sebastian Kühl, Annika Dochhan, Stephan Pachnicke
In this paper, we experimentally compare the performance of soft-failure management of different machine learning algorithms.
no code implementations • 26 Nov 2020 • Florian Azendorf, Annika Dochhan, Florian Spinty, Mirko Lawin, Bernhard Schmauss, Michael Eiselt
In this paper, we report on the integration of a Correlation-OTDR into a portable unit (30 cm x 30 cm), based on a multi-processor system on chip (MPSoC) and a small formfactor pluggable (SFP) 2. 5G transceiver.
no code implementations • 25 Nov 2020 • Florian Azendorf, Annika Dochhan, Bernhard Schmauss, Michael Eiselt
By means of C-OTDR (Correlation - Optical Time Domain Reflectometry), we measured the latency of100 km fiber with an accuracy of a few picoseconds.
no code implementations • 25 Nov 2020 • Florian Azendorf, Annika Dochhan, Florian Spinty, Mirko Lawin, Bernhard Schmauss, Michael Eiselt
Several multi-core fibers (MCF) were characterized using Correlation Optical Time Domain Reflectometry (C-OTDR) in terms of propagation delay and polarization mode dispersion (PMD).
no code implementations • 25 Nov 2020 • Florian Azendorf, Annika Dochhan, Krzysztof Wilczyński, Łukasz Szostkiewicz, Patryk Urban, Bernhard Schmauss, Francisco Javier Vilchez, Laia Nadal, Michela Svaluto Moreolo, Josep M. Fabrega, Michael Eiselt
Using a Correlation-OTDR and a modulation phase shift method we characterized four multi-core fibers.
no code implementations • 20 Nov 2020 • Florian Azendorf, Annika Dochhan, Jim Zou, Bernhard Schmauss, Michael Eiselt
We measured the latency of a 100 km fibre link using a Correlation OTDR.
no code implementations • 23 Sep 2020 • Annika Dochhan, Nicklas Eiselt, Robert Hohenleitner, Helmut Griesser, Michael Eiselt, Markus Ortsiefer, Christian Neumeyr, Juan José Vegas Olmos, Idelfonso Tafur Monroy, Jörg-Peter Elbers
We demonstrate up to 12 km, 56 Gb/s DMT transmission using high-speed VCSELs in the 1. 5 um wavelength range for future 400Gb/s intra-data center connects, enabled by vestigial sideband filtering of the transmit signal.
no code implementations • 23 Sep 2020 • Annika Dochhan, Nicklas Eiselt, Helmut Grießer, Michael Eiselt, Juan José Vegas Olmos, Idelfonso Tafur Monroy, Jörg-Peter Elbers
We review some currently discussed solutions for 400 Gbit/s inter-data center WDM transmission for up to 100 km.
no code implementations • 22 Sep 2020 • Annika Dochhan, Helmut Griesser, Nicklas Eiselt, Michael Eiselt, Jörg-Peter Elbers
It can be seen that an FFT length of 128 is sufficient to reach the required performance in terms of bit error ratio, however, a higher length can significantly improve the performance.
no code implementations • 22 Sep 2020 • Annika Dochhan, Nicklas Eiselt, Jinlong Wei, Helmut Griesser, Michael Eiselt, Juan José Vegas Olmos, Idelfonso Tafur Monroy, Jörg-Peter Elbers
We review three solutions for low-cost data center interconnects with a target reach of up to 80 km.
no code implementations • 22 Sep 2020 • Annika Dochhan, Helmut Griesser, Michael Eiselt, Jörg-Peter Elbers
We review currently discussed solutions for 80 km DWDM transmission targeting inter data-center connections at 100G and 400G line rates.
no code implementations • 21 Sep 2020 • Annika Dochhan, Helmut Grießer, Michael Eiselt, Jörg-Peter Elbers
We experimentally evaluate a flexible DMT system using 4 to 8 50-GHz-grid C-band channels to transmit 448 Gb/s over up to 240 km SSMF.
no code implementations • 21 Sep 2020 • Annika Dochhan, Helmut Grießer, Brian Teipen, Michael Eiselt
The novel 3-dimensional modulation format 3D-Simplex offers potentially 1. 2 dB higher OSNR tolerance than DP-DPSK while exhibiting the same spectral occupancy, modulating two bits per symbol.
no code implementations • 21 Sep 2020 • Annika Dochhan, Laia Nadal, Helmut Griesser, Michael Eiselt, Michela Svaluto Moreolo, Jörg-Peter Elbers
Enabled by channel adaptive bit and power loading, we experimentally demonstrate discrete multitone transmission at 56Gb/s with simple intensity modulation and direct detection and achieve 50 km reach in the 1. 55um window.
no code implementations • 8 Jun 2020 • Annika Dochhan, Johannes K. Fischer, Bodo Lent, Achim Autenrieth, Behnam Shariati, Pablo Wilke Berenguer, Jörg-Peter Elbers
We report on the EU H2020 project METRO-HAUL use-case demonstration, including flexible allocation of storage and computing resources in different network locations and deployment of a network slice instance through a programmable multi-layer optical network.
no code implementations • 8 Jun 2020 • Annika Dochhan, Tomislav Drenski, Helmut Griesser, Michael H. Eiselt, Jörg-Peter Elbers
DMT at 25 Gbit/s, 50 Gbit/s and 100 Gbit/s in passive systems with electro-absorption modulators is investigated.
no code implementations • 8 Jun 2020 • Annika Dochhan, Robert Emmerich, Pablo Wilke Berenguer, Colja Schubert, Johannes K. Fischer, Michael H. Eiselt, Jörg-Peter Elbers
A flexible semi-filterless architecture for metro DWDM networks with ring- or horseshoe topologies is presented.
no code implementations • 8 Jun 2020 • Annika Dochhan, Juraj Poliak, Janis Surof, Mathias Richerzhagen, Helawae Friew Kelemu, Ramon Mata Calvo
We report a 13. 16 Tbit/s 54-channel DWDM free-space optical data transmission field trial emulating the worst-case scenario for optical GEO satellite uplinks through the atmosphere, and show the system performance under turbulent conditions.
no code implementations • 8 Jun 2020 • Annika Dochhan, Nicklas Eiselt, Jim Zou, Helmut Griesser, Michael H. Eiselt, Jörg-Peter Elbers
We report on 112 Gbit/s real-time DMT transmission over up to 60 km, targeted at DCI applications.
no code implementations • 8 Jun 2020 • Gilda Raoof Mehrpoor, Carsten Schmidt-Langhorst, Benjamin Wohlfeil, Robert Elschner, Danish Rafique, Robert Emmerich, Annika Dochhan, Iria Lopez, Pedro Rito, Despoina Petousi, Dietmar Kissinger, Lars Zimmermann, Colja Schubert, Bernhard Schmauss, Michael Eiselt, Jörg-Peter Elbers
We demonstrate 64 GBd signal generation up to bipolar-8-ASK utilizing a single MZM, monolithically integrated with segmented drivers in SiGe.
no code implementations • 11 May 2020 • Annika Dochhan, Helmut Griesser, Michael Eiselt
We experimentally demonstrate a novel 3-dimensional modulation format with 1. 2-dB OSNR tolerance improvement potential compared to DP-BPSK, as verified for the linear case.