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DAILY NEWS AND INFORMATION FOR THE GLOBAL GRID COMMUNITY /
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Breaking News - Networking:
Opvista MetroVista Tops 600Km At 10G Without Dispersion
OpVista Inc announced that its 10G LAN interface is delivering error-free
performance over 600km of fiber without the need for dispersion management
equipment. This extends the connectivity of 10G switches and routers,
typically limited to 60km or less, to full metro and regional coverage.
Typical 10G transport systems require dispersion compensation every 60km. The
key to the extended performance is OpVista's superior Ultra-DWDM modulation
that multiplies optical capacity without changing the optical characteristics,
eliminating the need to re-engineer the fiber network. MetroVista products
will be showcased at Cable-Tec Expo 2004 in Orlando, Fla., later this month.
"Ultra-DWDM will always have inherent distance and wavelength density
advantages over a conventional pure TDM approach. A 10 Gbps TDM signal
requires chromatic dispersion compensation and sometimes even polarization
mode dispersion to clean up the distorted signal. And then you have to add
more optical amplification to compensate for the added loss," said Winston
Way, OpVista's founder and CTO. "Increasing the number of wavelengths while
keeping the modulation rate low avoids these problems entirely. And as an
additional benefit, a large number of 'smaller' wavelengths makes it easy to
drop a fraction of the full payload at any node in our network, resulting in
simpler and less expensive nodes."
Ultra-DWDM, available only from OpVista, delivers eight times the wavelength
density of conventional DWDM systems over exceptional transmission distances.
The combination of high wavelength density, long reach and reconfigurable
optical add-drop multiplexers (R-OADMs) makes it easy and economical to build
fully protected business services networks that connect any node to any node
on demand.
"Ultra-DWDM lends itself well to multiple implementations and increasing data
rates. The new 10G interface represents the first system enhancement in the
evolution, but as we have assured our customers, even higher rates are just
around the corner," said Ron Foster, OpVista's vice president of marketing and
sales. "We will be announcing availability of our 40G version later this year,
to match up with the new routers offering that capability."
OpVista's technology provides a reconfigurable and cost-effective architecture
for wavelength management because all wavelengths are broadcast throughout the
network and are available at all nodes. Reconfigurability is provided by
R-OADMS, tunable receivers that remotely and instantaneously tune to the
desired wavelength. As little as a single GbE can be dropped and optical power
balancing is automatic, without disrupting existing traffic.
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