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High spectral efficiency 1.6-b/s/Hz transmission (8 x 40 Gb/s with a 25-GHz grid) over 200-km SSMF using RZ-DQPSK and polarization multiplexing

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8 Author(s)
Wree, C. ; Chair for Commun., Univ. of Kiel, Germany ; Hecker-Denschlag, N. ; Gottwald, E. ; Krummrich, P.
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With relatively simple standard transmission equipment, we achieved a wavelength-division-multiplexing transmission with a record-high spectral efficiency of 1.6 b/s/Hz using return-to-zero differential quadrature phase-shift keying and polarization multiplexing over 200-km standard single-mode fiber with a 40-Gb/s capacity per wavelength but 10-GSymbol/s rate.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 9 )