IP: Transmission Mile Stone

[David Farber <farber () cis upenn edu>]

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> Date: Tue, 21 Mar 2000 09:38:33 -0500 (EST)
> From: Gerald A Ballman <ballman () nadn navy mil>
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> To: David Farber <farber () cis upenn edu>
> Subject: Transmission Mile Stone
>
>
>
>  MURRAY HILL, N.J.--Scientists at Bell Laboratories here said they have
>  set a world's record by transmitting 3.28 trillion bits
>  of data per second over 300 kilometers of fiber optic cable.
>  The research arm of Lucent Technologies Inc. said this
>  was the industry's first demonstration of long-distance, triple-terabit
>  data transmission. Researchers achieved those speeds using Lucent's
>  experimental optic fiber, called TrueWave.
>  Bell Labs scientists said they used three 100-kilometer
>  fiber spans to transmit 40-gigabits over each of the 40 wavelengths of
>  light (colors) in the conventional C-band frequency range and 40
>  Gbits/sec. over each of the 42 channels in the long-wave L-band range.
>  "This is a milestone on the road to super-high-capacity
>  long-reach transmission," said Alastair Glass, executive director
>  of the Bell Labs Photonics Research Lab. "It proves the practicality of
>  40-Gb/s systems with repeater spacing typical of today's networks.
>  According to researchers, the experiment used both
>  dense wavelength division multiplexing (DWDM)--a technology that
>  combines multiple wavelengths onto a single fiber--and distributed Raman
>  amplification--a technique that allows optical fiber to amplify the
>  signals traveling through it.