Single-Laser 32.5 Tbit/s Nyquist WDM Transmission
Single-Laser 32.5 Tbit/s Nyquist WDM Transmission
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DOI:
10.1364/jocn.4.000715
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发表时间:
2012-10-01
影响因子:
5
通讯作者:
Leuthold, Juerg
中科院分区:
文献类型:
--
作者:
Hillerkuss, David;Schmogrow, Rene;Leuthold, Juerg
We demonstrate single-laser 32.5 Tbit/s 16QAM Nyquist wavelength division multiplexing transmission over a total length of 227 km of SMF-28 without optical dispersion compensation. A number of 325 optical carriers is derived from a single laser and encoded with dual-polarization 16QAM data using sinc-shaped Nyquist pulses. As we use no guard bands, the carriers have a spacing of 12.5 GHz equal to the symbol rate or Nyquist bandwidth of the data. We achieve a net spectral efficiency of 6.4 bit/s/Hz using a software-defined transmitter, which generates the electric drive signals for the electro-optic modulator in real time.