Details

Autor(en) / Beteiligte

• Schmogrow, R
• Hillerkuss, D
• Wolf, S
• Bäuerle, B
• Winter, M
• Kleinow, P
• Nebendahl, B
• Dippon, T
• Schindler, P C
• Koos, C
• Freude, W
• Leuthold, J

Titel

512QAM Nyquist sinc-pulse transmission at 54 Gbit/s in an optical bandwidth of 3 GHz

Ist Teil von

• Optics express, 2012-03, Vol.20 (6), p.6439-6447

Ort / Verlag

United States

Erscheinungsjahr

2012

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We demonstrate for the first time transmission of 54 Gbit/s and 48 Gbit/s over 44 km and 150 km, respectively, utilizing an optical bandwidth of only 3 GHz. We used polarization division multiplexed 512QAM and 256QAM modulation formats in combination with Nyquist pulse shaping having virtually zero roll-off. The resulting spectral efficiencies range up to 18 bit/s/Hz and 16 bit/s/Hz, respectively. Taking into account the overhead required for forward error correction, the occupied signal bandwidth corresponds to net spectral efficiencies of 14.4 bit/s/Hz and 15 bit/s/Hz, which could be achieved in a wavelength division multiplexed network without spectral guard bands.