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25 x 40-Gb/s copolarized DPSK transmission over 12 x 100-km NZDF with 50-GHz channel spacing

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7 Author(s)
Gnauck, A.H. ; Lucent Technol. Bell Labs, Holmdel, NJ, USA ; Raybon, G. ; Chandrasekhar, S. ; Leuthold, J.
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We report the first transmission of copolarized 40-Gb/s channels with 0.8-b/s/Hz spectral efficiency. We transmit 25 channels over 1200 km of nonzero-dispersion fiber (1600 km with adjacent channels orthogonally polarized). This result was obtained using differential phase-shift keying, and without forward error correction.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 3 )