Journal ArticleDOI
Physical layer transmission and switching solutions in support of spectrally and spatially flexible optical networks
Roland Ryf,Sethumadhavan Chandrasekhar,Sebastian Randel,David T. Neilson,Nicolas K. Fontaine,Mark D. Feuer +5 more
TLDR
New transponders capable of providing larger capacities and making optimal use of the optical transmission spectrum, new optical switches capable of flexible routing of wavelength and multiple spatial channels, and new amplifiers supporting multiple spatialannels and broad optical bandwidth are explored.Abstract:
Fiber optic communication networks in the era of large data centers are required to provide large capacity, often orders of magnitude larger than the capacity of a single-mode fiber. The transport capacity must also be rapidly reconfigurable to adapt to the applications and services provided by the data centers. This article explores new transponders capable of providing larger capacities and making optimal use of the optical transmission spectrum, new optical switches capable of flexible routing of wavelength and multiple spatial channels, and new amplifiers supporting multiple spatial channels and broad optical bandwidth.read more
Citations
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Journal ArticleDOI
Space-division multiplexing for optical fiber communications
TL;DR: In this paper, the main classifications and features of novel SDM fibers such as multicore fibers (MCFs), multimode fibers, few-mode MCFs, and coupled-core MCFs are discussed.
Journal ArticleDOI
Survey of resource allocation schemes and algorithms in spectrally-spatially flexible optical networking
TL;DR: This study overviews the state-of-the-art solutions in the scope of planning and operating SDM optical networks in a systematic way as well as to identify some open issues that lack solutions and need to be addressed.
Journal ArticleDOI
Resource Allocation for Space-Division Multiplexing: Optical White Box Versus Optical Black Box Networking
TL;DR: In this paper, the authors studied the routing, modulation, spectrum, and core allocation (RMSCA) problem for weakly-coupled MCF-based elastic SDM networks implemented through AoDs and static ROADMs.
Journal ArticleDOI
Comparison of Spectral and Spatial Super-Channel Allocation Schemes for SDM Networks
Pouria Sayyad Khodashenas,Jose Manuel Rivas-Moscoso,Domenico Siracusa,Federico Pederzolli,Behnam Shariati,Dimitrios Klonidis,Elio Salvadori,Ioannis Tomkos +7 more
TL;DR: In this paper, the authors evaluate the advantages of using the extra dimension introduced by space-division multiplexing (SDM) for dynamic bandwidth-allocation purposes in a flexible optical network, with an emphasis on the spectral efficiency (SE)/reach tradeoff for different multiline-rate scenarios, created either by changing the number of sub-channels (Sb-Ch), or by employing different modulation formats.
Journal ArticleDOI
Adaptive modulation and flexible resource allocation in space-division- multiplexed elastic optical networks
TL;DR: The performance results show that the SGA initiated with connection demands sorted based on increasing the number of possible space and spectrum assignment layouts (SAL) can achieve the best near-optimal solution for a small network experiment and the ascending SAL number (ASN) policy shows the best performance for realistic networks.
References
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Journal ArticleDOI
Digital Coherent Optical Receivers: Algorithms and Subsystems
TL;DR: In this article, a theoretical analysis of the dual-polarization constant modulus algorithm is presented, where the control surfaces several different equalizer algorithms are derived, including the decision-directed, trained, and the radially directed equalizer for both polarization division multiplexed quadriphase shift keyed (PDM-QPSK) and 16 level quadrature amplitude modulation (PDm-16-QAM).
Journal ArticleDOI
146λ × 6 × 19-Gbaud Wavelength-and Mode-Division Multiplexed Transmission Over 10 × 50-km Spans of Few-Mode Fiber With a Gain-Equalized Few-Mode EDFA
Ezra Ip,Ming-Jun Li,Kevin Wallace Bennett,Yue-Kai Huang,Akihiro Tanaka,Andrey Evgenievich Korolev,Konstantin Koreshkov,William A. Wood,Eduardo Mateo,Junqiang Hu,Yutaka Yano +10 more
TL;DR: In this paper, the authors demonstrate wavelength and mode-division multiplexed transmission over a fiber re-circulating loop comprising 50-km of low-DMGD few-mode fiber, and an optimized fewmode EDFA with reduced wavelength dependent gain and mode dependent gain.
Journal ArticleDOI
Cladding-pumped erbium-doped multicore fiber amplifier
Kazi S. Abedin,Thierry F. Taunay,M. Fishteyn,D. J. DiGiovanni,V. R. Supradeepa,John M. Fini,Man Yan,Benyuan Zhu,Eric M. Monberg,F. V. Dimarcello +9 more
TL;DR: A cladding pumped multicore erbium-doped fiber amplifier for simultaneous amplification of 6 channels and peak gain over 32 dB has been obtained at a wavelength of 1560 nm and the bandwidth measured at 20-dB gain was about 35 nm.
Journal ArticleDOI
Diode-pumped wideband thulium-doped fiber amplifiers for optical communications in the 1800 - 2050 nm window.
Z. Li,Alexander M. Heidt,Nikita Simakov,Yongmin Jung,Jae M. O. Daniel,Shaif-ul Alam,David J. Richardson +6 more
TL;DR: The first in-band diode-pumped TDFAs operating in the 2 µm wavelength region are presented and their suitability as high performance amplifiers in potential future telecommunication networks is tested.
Journal ArticleDOI
First demonstration and detailed characterization of a multimode amplifier for space division multiplexed transmission systems
Yongmin Jung,Shaif-ul Alam,Z. Li,Anirban Dhar,D. Giles,I. P. Giles,Jayanta K. Sahu,Francesco Poletti,Lars Gruner-Nielsen,David J. Richardson +9 more
TL;DR: The first demonstration of a multimode (two mode-group) erbium-doped fiber amplifier for Space Division Multiplexed (SDM) applications is presented and differential modal gains can be controlled and reduced both by fiber design and control of the pump field distribution.