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Chromatic Dispersion Testing in Coherent Systems

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Chromatic Dispersion Testing in Coherent Systems

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  • Author: Francis Audet, Tony Lowe
The demand for increased bandwidth is constant, and to avoid investing huge amounts in new systems, most operators, if not all of them, are looking to re-use their existing fiber infrastructure. This, however, poses a problem because the standard train of “1” and “0”, called on-off keying (OOK), simply can’t be pushed any further on most of the installed bases.

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