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5.94-Tb/s 1.49-b/s/Hz (40/spl times/2/spl times/2/spl times/40 Gb/s) RZ-DQPSK polarization-division multiplex C-band transmission over 324 km
Journal article

5.94-Tb/s 1.49-b/s/Hz (40/spl times/2/spl times/2/spl times/40 Gb/s) RZ-DQPSK polarization-division multiplex C-band transmission over 324 km

S. Bhandare, D. Sandel, B. Milivojevic, A. Hidayat, A.A. Fauzi, Hongbin Zhang, S.K. Ibrahim, F. Wust and R. Noe
IEEE photonics technology letters, Vol.17(4), pp.914-916
01/04/2005
DOI: https://doi.org/10.1109/LPT.2005.843962

Abstract

Differential phase-shift keying (DPSK) Intersymbol interference Optical fiber polarization Optical filters Optical interferometry Optical modulation Optical variables control Phase modulation Phase shift keying polarization quadrature phase-shift keying Radio frequency Wavelength division multiplexing wavelength-division multiplexing (WDM)
The combination of return-to-zero differential quadrature phase-shift keying with polarization-division multiplex, a 16-ary modulation scheme, allows for ultimate spectral efficiency. We raise C-band fiber capacity with phase-shift keying transmission beyond previously reported figures, achieving forward-error correction limit performance over four fiber spans.

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