Generation and long-haul transmission of polarization-switched QPSK at 42.9 Gb/s.

  title={Generation and long-haul transmission of polarization-switched QPSK at 42.9 Gb/s.},
  author={David S. Millar and Domaniç Lavery and Sergejs Makovejs and Carsten Behrens and Benn C. Thomsen and Polina Bayvel and Seb J. Savory},
  journal={Optics express},
  volume={19 10},
We demonstrate, for the first time, the generation and transmission of polarization-switched QPSK (PS-QPSK) signals at 42.9 Gb/s. Long-haul transmission of PS-QPSK is experimentally investigated in a recirculating loop and compared with transmission of dual-polarization QPSK (DP-QPSK) at 42.9 Gb/s per channel. A reduction in the required OSNR of 0.7 dB was found at a BER of 3.8 x 10(-3), resulting in an increase in maximum reach of more than 30% for a WDM system operating on a 50 GHz frequency… CONTINUE READING
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