NeoPhotonics Demonstrates 90 km 400ZR Transmission in 75 GHz DWDM Channels Enabling 25.6 Tbps per Fiber Capacity
18 Junho 2020 - 9:30AM
Business Wire
NeoPhotonics Completed an End-to-End ZR Link
Test by Using Its 400ZR Interoperable Pluggable Modules and 75 GHz
Multiplexers and De-multiplexers
NeoPhotonics Corporation (NYSE: NPTN), a leading developer
manufacturer of silicon photonics and advanced hybrid photonic
integrated circuit-based lasers, modules and subsystems for
bandwidth-intensive, high speed communications networks, today
announced that it has completed experimental verification of the
transmission of 400Gbps data over data center interconnect (DCI) ZR
distances in a 75 GHz spaced Dense Wavelength Division Multiplexing
(DWDM) channel. NeoPhotonics achieved two milestones using its
interoperable pluggable 400ZR coherent modules and its specially
designed athermal arrayed waveguide grating (AWG) multiplexers
(MUX) and de-multiplexers (DMUX). First, data rate per channel
increases from today’s non-interoperable 100Gbps direct-detect
transceivers to 400Gbps interoperable coherent 400ZR modules.
Second, the current DWDM infrastructure can be increased from 32
channels of 100 GHz-spaced DWDM signals to 64 channels of 75
GHz-spaced DWDM signals. The total DCI fiber capacity can thus be
increased from 3.2 Tb/s (100Gb/s/ch. x 40 ch.) to 25.6 Tb/s
(400Gb/s/ch. x 64 ch.), which is a total capacity increase of 800
percent.
NeoPhotonics technology overcomes multiple challenges to
transporting 400ZR signals in 75 GHz-spaced DWDM channels. The
400ZR signal utilizes an approximately 60 Gbaud symbol rate and 16
QAM modulation, resulting in a broader transmitting signal spectrum
compared to that of a standard 100 Gb/s coherent or PAM4 signals.
Furthermore, it is recognized that the center frequencies of the
lasers, MUX and DMUX will all drift due to temperature changes and
aging. Consequently, as the channel spacing is reduced from 100GHz
to 75GHz, adjacent channel interference (ACI) becomes more
critical, and can potentially degrade the optical signal-to-noise
ratio of 400ZR signals.
The filters used in NeoPhotonics MUX and DMUX units are designed
to limit ACI while at the same time having a stable center
frequency against extreme temperatures and aging. The optical
signal spectrum of the pluggable 400ZR transmitter is very
important for two reasons. First, the spectrum should not be too
wide, as that would result in “spillover energy” impacting its
neighbor DWDM channels. Second, it also cannot be too narrow, as
that would degrade the signal quality or even recoverability,
especially after the MUX and DMUX filtering.
NeoPhotonics has demonstrated end-to-end 90km DCI links using
three in-house 400ZR pluggable transceivers with their tunable
laser frequencies tuned to 75GHz spaced channels, and a pair of
passive 75GHz-spaced DWDM MUX and DMUX modules designed
specifically for this application. The optical signal-to-noise
ratio (OSNR) penalty due to the presence of the MUX and DMUX and
the worst-case frequency drifts of the lasers, as well as the MUX
and DMUX filters, is less than 1dB. The worst-case component
frequency drifts were applied to emulate the operating conditions
for aging and extreme temperatures.
“The combination of compact 400ZR silicon photonics-based
pluggable coherent transceiver modules with specially designed 75
GHz channel spaced multiplexers and de-multiplexers can greatly
increase the bandwidth capacity of optical fibers in a DCI
application and consequently greatly decrease the cost per bit,”
said Tim Jenks, Chairman and CEO of NeoPhotonics. “These 400ZR
coherent techniques pack 400Gbps of data into a 75 GHz wide
spectral channel, placing stringent requirements on the
multiplexers and de-multiplexers. We are uniquely able to meet
these requirements because we do both design and fabrication of
planar lightwave circuits and we have 20 years of experience
addressing the most challenging MUX/DMUX applications,” concluded
Mr. Jenks.
About NeoPhotonics
NeoPhotonics is a leading developer and manufacturer of lasers
and optoelectronic solutions that transmit, receive and switch
high-speed digital optical signals for Cloud and hyper-scale data
center internet content provider and telecom networks. The
Company’s products enable cost-effective, high-speed over distance
data transmission and efficient allocation of bandwidth in optical
networks. NeoPhotonics maintains headquarters in San Jose,
California and ISO 9001:2015 certified engineering and
manufacturing facilities in Silicon Valley (USA), Japan and China.
For additional information visit www.neophotonics.com.
Legal Notice Regarding Forward-Looking Statements
This press release includes statements that qualify as
forward-looking statements under the Private Securities Litigation
Reform Act of 1995, including anticipated performance of
NeoPhotonics’ products. Readers are cautioned that these
forward-looking statements involve risks and uncertainties and are
only predictions based on the company’s current expectations,
estimates and projections The actual company results and the timing
of events could differ materially from those anticipated in such
forward-looking statements as a result of these risks,
uncertainties and assumptions. Certain risks and uncertainties that
could cause the company’s results to differ materially from those
expressed or implied by such forward-looking statements as well as
other risks and uncertainties relating to the company’s business,
are described more fully in the Company’s Annual Report on Form
10-K for the year ended December 31, 2019 and its Quarterly Report
on Form 10-Q for the quarter ended March 31, 2020, filed with the
Securities and Exchange Commission.
©2020 NeoPhotonics Corporation. All rights reserved.
NeoPhotonics and the red dot logo are trademarks of NeoPhotonics
Corporation. All other marks are the property of their respective
owners.
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LouVan Communications, Inc. Michael Newsom Mobile: +1
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