Tuesday, 20 September, 2011
14:30 -- 16:15
Room B

Tu.5.B • Spatial Multiplexing

Chair: René-Jean Essiambre; Alcatel-Lucent, United States
Tu.5.B.1 • 14:30
MIMO-based Signal Processing of Spatially Multiplexed 112-Gb/s PDM-QPSK Signals using Strongly-Coupled 3-Core Fiber
Sebastian Randel1, Maurizio Magarini2, Roland Ryf1, Alan Gnauck1, Peter Winzer1, Tetsuya Hayashi3, Toshiki Taru3, Takashi Sasaki3; 1Bell Laboratories, Alcatel-Lucent, USA; 2Dipartimento di Elettronica e Informazione, Politecnico di Milano, Italy; 3Optical Communications R&D Laboratories, Sumitomo Electric Industries, Japan.
We experimentally demonstrate 6 x 6 coherent multiple-input multiple-output (MIMO) crosstalk mitigation after simultaneous transmission of 3 spatially multiplexed 112-Gb/s PDM-QPSK channels over 24 km of a strongly-coupled 3-core fiber. The crosstalk in the fiber is about -4 dB and is almost completely canceled by MIMO processing.
Tu.5.B.2 • 14:45
Understanding Discrete Linear Mode Coupling in Few-Mode Fiber Transmission Systems
Jordi Vuong1, Petros Ramantanis1, Aida Seck1, Djalal Bendimerad1, Yann Frignac1; 1Telecom SudParis, France.
We present an investigation of system performance for few-mode fiber propagation, focusing on the impact of discrete mode coupling, while varying parameters, such as the differential mode group delay, and employing (or not) MIMO processing.
Tu.5.B.3 • 15:00
Coherent Multimode-Fiber MIMO Transmission with Spatial Constellation Modulation
Henning Bülow1, Hussein Al-Hashimi2,3, Bernhard Schmauss2,3; 1ZFZ/ON, Alcatel-Lucent, Bell Labs, Germany; 2LHFT, University Erlangen-Nuernberg, Germany; 3SAOT, Erlangen Graduate School in Advanced Optical Technologies, Germany.
A 12-dimensional 32-point sphere constellation defined among three spatial MMF modes exhibits a 1.5-dB improvement versus 3 PDM-BPSK transmitters at 0.001 outage probability even in the presence of statistical mode dependent loss.
Tu.5.B.4 • 15:15
Two-Mode Transmission with Digital Inter-Modal Cross-Talk Mitigation
Clemens Koebele1, Massimiliano Salsi1, Donato Sperti1,2, Patrice Tran1, Patrick Brindel1, Haik Mardoyan1, Sebastien Bigo1, Aurélien Boutin3, Pierre Sillard4, Frederic Cerou5, Gabriel Charlet1; 1Alcatel-Lucent Bell Labs, France; 2Dipartimento di Ingegneria dell'Informazione, Università degli Studi di Parma, Italy; 3Kylia, France; 4Draka Communications, France; 5IRISA/INRIA, France.
We mitigate penalties stemming from the finite mode-rejection ratio of the mode-multiplexer/-demultiplexer in a two mode transmission experiment at 100Gbit/s over 20-km, by using a greater number of receivers and dedicated MIMO algorithms.
Tu.5.B.5 • 15:30
112-Tb/s (7x160x107Gb/s) Space-Division Multiplexed DWDM Transmission over a 76.8-km Multicore Fiber
Benyuan Zhu1, Xiang Liu2, Sethumadhavan Chandrasekhar2, Thierry Taunay1, Michael Fishteyn1, Man Yan1, John M. Fini1, Eric Monberg1, Frank Dimarcello1; 1OFS Labs, USA; 2Bell Labs, Alcatel-Lucent, USA.
A record capacity of 112 Tb/s with 14-b/s/Hz aggregate spectral-efficiency is transmitted over a 76.8-km seven-core-fiber using space-division multiplexing. Each core carries 160 107-Gb/s PDM-QPSK channels on a 50-GHz grid in C and L bands.
Tu.5.B.6 • 15:45
Transmission of 112 Gb/s PM-QPSK Signals Over up to 635 km of Multimode Optical Fiber
John D. Downie1, Jason Hurley1, Dmitri V. Kuksenkov1, Christopher M. Lynn1, Andrey E. Korolev1, Vladimir N. Nazarov1; 1Corning Incorporated, USA.
We investigate transmission of 112 Gb/s PM-QPSK signals over 50 um core diameter OM3 multimode fiber using the center launch approach. We demonstrate successful transmission of 16 DWDM channels over a distance of 635 km.
Tu.5.B.7 • 16:00
Penalties from In-Band Crosstalk for Advanced Optical Modulation Formats
Peter Winzer1, Alan Gnauck1, Agnieszka Konczykowska2, Filipe Jorge2, Jean-Yves Dupuy2; 1Bell Labs, Alcatel-Lucent, USA; 2III-V Labs, France.
We quantify, through simulations and experiments at 21.4 GBaud, the effect of in-band crosstalk on several advanced optical modulation formats, showing a 1-dB penalty at a bit-error ratio of 1×10^-3 from a crosstalk of -18 dB, -24 dB, and -32 dB for QPSK, 16-QAM, and 64-QAM, respectively.