R
Roland Ryf
Researcher at Bell Labs
Publications - 224
Citations - 5061
Roland Ryf is an academic researcher from Bell Labs. The author has contributed to research in topics: Multi-mode optical fiber & Multiplexing. The author has an hindex of 32, co-authored 224 publications receiving 3829 citations. Previous affiliations of Roland Ryf include Nokia.
Papers
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Journal ArticleDOI
6×56-Gb/s mode-division multiplexed transmission over 33-km few-mode fiber enabled by 6×6 MIMO equalization
Sebastian Randel,Roland Ryf,A. Sierra,Peter J. Winzer,Alan H. Gnauck,Cristian Bolle,Rene-Jean Essiambre,David W. Peckham,Alan McCurdy,Robert Lingle +9 more
TL;DR: It is shown that 6×6 MIMO processing can be used to almost completely compensate for crosstalk and intersymbol interference due to mode coupling in a system that transmits uncorrelated 28-GBaud QPSK signals on the six spatial and polarization modes supported by a novel few-mode fiber.
Journal ArticleDOI
Mode-selective photonic lanterns for space-division multiplexing
Sergio G. Leon-Saval,Nicolas K. Fontaine,Joel R. Salazar-Gil,Burcu Ercan,Roland Ryf,Joss Bland-Hawthorn +5 more
TL;DR: A 3x1 fiber-based photonic lantern spatial-multiplexer with mode-selectivity greater than 6 dB and transmission loss of less than 0.3 dB is demonstrated, which are to the authors' knowledge the lowest insertion and mode-dependent loss devices.
Journal ArticleDOI
Laguerre-Gaussian mode sorter.
TL;DR: In this paper, the authors present a multi-plane light conversion scheme for large number of spatial modes in a scalable fashion, where the number of phase plates required scales with the dimensionality of the transformation.
Journal ArticleDOI
Geometric requirements for photonic lanterns in space division multiplexing.
TL;DR: This work uses modal analysis, the beam propagation method, and a transfer matrix technique to analyze the lanterns throughput along with its mode dependent loss and shows that unitary coupling between single-mode fibers and a multi-mode fiber is only possible by optimizing the arrangements of the cores.
Proceedings ArticleDOI
30×30 MIMO transmission over 15 spatial modes
Nicolas K. Fontaine,Roland Ryf,Haoshuo Chen,Amado Velazquez Benitez,J. E. Antonio Lopez,R. Amezcua Correa,Binbin Guan,Burcu Ercan,Ryan P. Scott,S. J. Ben Yoo,Lars Gruner-Nielsen,Yi Sun,Robert J. Lingle +12 more
TL;DR: 15-mode photonic lanterns enabled low-loss coupling into and out of the fiber and a time-multiplexed coherent receiver facilitates measurement of all 30 signals.