Nokia and Facebook break subsea spectral efficiency records in transatlantic field tests
(Thomson Reuters ONE) -
Press Release
* Nokia and Facebook successfully completed multiple submarine field trials
over a 5,500 km submarine cable between New York and Ireland
* This submarine field trial of Nokia Bell Labs' new probabilistic
constellation shaping (PCS) technology used shaped 64-QAM, which achieved a
record spectral efficiency of 7.46 b/s/Hz and increased the stated capacity
of the system by almost 2.5 times
* The test also included a successful 11,000 km round trip submarine
transmission using shaped 64-QAM achieving a record spectral efficiency of
5.68 b/s/Hz and a first demonstration of 200 Gb/s and 250 Gb/s wavelengths
and 16-QAM modulation over a transatlantic submarine route using a real-time
coherent DSP
21 March 2017
Espoo, Finland - Nokia and Facebook have collaborated on field trials of new
optical digital signal processing technologies over a 5,500 kilometer
transatlantic subsea link.
As bandwidth-hungry applications such as video and virtual reality become
accessible to more people around the world, scaling the telecommunications
infrastructure that supports them is a significant challenge. To increase the
capacity capabilities of subsea fiber, Nokia and Facebook tested Nokia Bell
Labs' new probabilistic constellation shaping (PCS) technology. The test showed
an increase of almost 2.5x more capacity than the stated optical transmission
capacity of the system, demonstrating the feasibility of the technology across a
challenging real-world fiber-optic network.
PCS, an area of active Nokia Bell Labs research, is a novel technique that uses
'shaped' quadrature amplitude modulation (QAM) formats to flexibly adjust
transmission capacity to near the physical limits of a given fiber-optic link.
In this first-of-its-kind experiment for an installed submarine link, conceived
and planned by Facebook, PCS based on 64 QAM, combined with digital nonlinearity
compensation and low-linewidth lasers, achieved a record spectral efficiency of
7.46 b/s/Hz, indicating the potential to upgrade this cable to 32 Tb/s per fiber
in the future.
Transmission tests based on the commercially available Nokia Photonic Service
Engine 2 (PSE-2) validated the successful transmission of 8-QAM wavelengths
running at 200 Gb/s and 16-QAM wavelengths running at 250 Gb/s - a first for
transatlantic transmission. 200G 8-QAM wavelengths supported a spectral
efficiency of 4 b/s/Hz while exhibiting sufficient performance margin to support
reliable, commercial operation.
The results of the trial will be presented in a post-deadline paper at the
Optical Fiber Communication Conference and Exhibition (OFC), March 21-23 in Los
Angeles, CA.
Dr. Stephen Grubb, global optical network architect at Facebook, said: "Facebook
wants to increase the pace of innovation and adoption of next-generation optical
technologies. This field trial with Nokia demonstrates that the scalable optical
technology of PCS together with narrow linewidth laser sources can achieve
capacities extremely close to the Shannon limit. This ensures that we are both
maximizing our investment in submarine cable systems, as well as continuing to
drive the cost per bit of submarine transport lower."
Sam Bucci, head of optical networking at Nokia, said: "We are thrilled to
partner with Facebook to promote our common commitment to accelerating
innovation in optical transmission. By demonstrating promising areas of Nokia
Bell Labs research such as PCS, as well as coherent technologies available
today, we hope to chart a path forward for the industry towards higher
capacities, greater reach, and more network flexibility."
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About Facebook
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About Nokia
Nokia is a global leader innovating the technologies at the heart of our
connected world. Powered by the research and innovation of Nokia Bell Labs, we
serve communications service providers, governments, large enterprises and
consumers, with the industry's most complete, end-to-end portfolio of products,
services and licensing.
From the enabling infrastructure for 5G and the Internet of Things, to emerging
applications in virtual reality and digital health, we are shaping the future of
technology to transform the human experience. www.nokia.com
Media Enquiries:
Sarah Miller
Nokia IP & Optical Communications
Phone: +613 720 9716
Email: sarah.miller(at)nokia.com
Twitter: (at)sarahjmiller2
Nokia Communications
Phone: +358 10 448 4900
Email: press.services(at)nokia.com
Facebook
Email: press(at)fb.com
This announcement is distributed by Nasdaq Corporate Solutions on behalf of Nasdaq Corporate Solutions clients.
The issuer of this announcement warrants that they are solely responsible for the content, accuracy and originality of the information contained therein.
Source: NOKIA via GlobeNewswire
Unternehmensinformation / Kurzprofil:
Datum: 21.03.2017 - 14:00 Uhr
Sprache: Deutsch
News-ID 531549
Anzahl Zeichen: 6028
contact information:
Town:
Espoo
Kategorie:
Business News
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