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Bell Labs Proposes Multiplexing Scheme for Petabit Communications

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MURRAY HILL, N.J., Nov. 23, 2015 — A new multiplexing scheme could allow optical networks to transmit data at petabits per second — creating enough capacity to allow two-thirds of the U.S. population to simultaneously stream HD movies over a single optical fiber. Real-time space-division multiplexed optical multiple-input-multiple-output (MIMO-SDM) was developed at Bell Labs. The technique was tested using six transmitters and six receivers in combination with real-time digital signal processing over a 60-km-long coupled-mode fiber. Where previous experiments used off-line processing, MIMO-SDM eliminated...Read full article

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    Published: November 2015
    Glossary
    multiplexing
    The combination of two or more signals for transmission along a single wire, path or carrier. In most optical communication systems this is referred to as wavelength division multiplexing, in which the combination of different signals for transmission are imbedded in multiple wavelengths over a single optical channel. The optical channel is a fiber optic cable or any other standard optical waveguide.
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