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December 19, 2005
MCI Advances 40 Gbps Technology
MCI Inc. teamed with Xtera Communications, Mintera Corp., and Juniper Networks
to successfully transmit 40 Gigabits per second (Gbps) over 3,040 km of
field fiber in MCI's Dallas metro area network. This milestone
demonstrates that next generation technology is now available to
support high-bandwidth IP traffic demands over Ultra Long Haul (ULH)
distances on existing fiber infrastructure while maintaining reliable
performance standards.
"MCI continues to lead the industry in technology innovation and the
delivery of next generation IP services," said Jack Wimmer, MCI vice
president of Network Architecture and Advanced Technology. "As we
execute on our IP convergence strategy, and as customer applications
drive bandwidth onto our network, 40 Gbps transmission becomes an
increasingly important technology to enable efficient scaling of our
network."
The technology field trial, which was conducted in October and
November, carried 74 channels of 10 Gbps traffic and 2 channels of 40
Gbps traffic over 38 individual 80 km spans of standard single mode
fiber around the Dallas metro area using the Xtera all-Raman DWDM
system, Mintera advanced modulation format long reach OC768
transponders, and Juniper Networks T640 IP routers with OC768 short
reach interfaces.
Using patented all-Raman technologies, Xtera's Nu-Wave Multi-Reach
DWDM platform supports 40 Gbps transmission with unprecedented reach,
extremely high bandwidth, and extensive Optical Add-Drop Multiplexer
(OADM) flexibility to deliver high-quality video, data and advanced
voice services.
This all-Raman amplifier allows the optical signal to be carried a
greater distance with three times the capacity of most traditional
Erbium Doped Fiber Amplifiers (EDFA). As a result, an all-Raman
approach can translate into lower network costs, increased reliability,
reduced infrastructure builds, simplified channel engineering and
streamlined capacity planning.
Mintera's MI 40000 optical transport equipment enables carriers to
deploy 40 Gbps wavelengths without traffic interruption on
infrastructures designed for, and simultaneously, carrying lower
bit-rate signals. A variety of modulation formats, including DPSK, are
employed to permit this boost in bandwidth efficiency to be implemented
without adding regeneration sites, thus significantly lowering overall
network costs.
Juniper Networks OC768c router interface enables carriers to
increase the efficiency and capacity of IP networks to better support
bandwidth-intensive applications and services. The Juniper Networks
T-series routing platform offers a combination of advanced routing
features, IP/MPLS capabilities, reliability and scale to support
high-capacity core applications. In combination with the JUNOS software
feature set, the T-series provides the flexibility and scale to help
meet growing bandwidth capacity requirements.
MCI originally demonstrated high-capacity Internet technology in May
2004 when the company successfully transmitted the world's first 40
Gbps IP traffic using MCI optical network fiber between San Francisco
and San Jose, Calif. That was followed weeks later with MCI
extending the reach of 40 Gbps wavelengths to 1,200 km, using the
company's ULH backbone network between Sacramento, Calif., and Salt
Lake City.
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