Fischer Johannes Karl, Molle Lutz, Nölle Markus, Gross Dirk-Daniel, Schmidt-Langhorst Carsten, Schubert Colja
Fraunhofer Institute for Telecommunications Heinrich Hertz Institute, Department Photonic Networks and Systems, Einsteinufer 37, 10587 Berlin, Germany.
Opt Express. 2011 Dec 12;19(26):B667-72. doi: 10.1364/OE.19.00B667.
We experimentally investigate 28-GBd (84-Gb/s) and 37.3-GBd (112-Gb/s) polarization-switched quadrature phase-shift keying (PS-QPSK) signals. In single-channel transmission experiments over up to 12500 km ultra large effective area fiber, we compare their performance to that of polarization-division multiplexing quadrature phase-shift keying (PDM-QPSK) signals at the same bit rates. The experimental results show that PS-QPSK not only benefits from its better sensitivity but also offers an increased tolerance to intra-channel nonlinearities.
我们对28GBd（84Gb/s）和37.3GBd（112Gb/s）的偏振切换正交相移键控（PS-QPSK）信号进行了实验研究。在长达12500公里的超大有效面积光纤的单通道传输实验中，我们将它们的性能与相同比特率下的偏振复用正交相移键控（PDM-QPSK）信号的性能进行了比较。实验结果表明，PS-QPSK不仅受益于其更好的灵敏度，而且对通道内非线性的容忍度也有所提高。
