Behrens Carsten, Lavery Domaniç, Millar David S, Makovejs Sergejs, Thomsen Benn C, Killey Robert I, Savory Seb J, Bayvel Polina
Optical Networks Group, Department of Electronic and Electrical Engineering, University College London (UCL), Torrington Place, London WC1E 7JE, UK.
Opt Express. 2011 Dec 12;19(26):B581-6. doi: 10.1364/OE.19.00B581.
We investigated ultra-long-haul transmission of polarization-switched QPSK (PS-QPSK) and polarization-division-multiplexed BPSK (PDM-BPSK) at 42.9 Gbit/s experimentally as well as by means of computer simulations. PDM-BPSK allowed transmission distances in excess of 14,040 km to be achieved, compared to 13,640 km for PS-QPSK. However, PS-QPSK offers a significant reduction in receiver complexity due to the lower symbol-rate.
我们通过实验以及计算机模拟研究了42.9 Gbit/s速率下偏振开关四相相移键控（PS-QPSK）和偏振复用二进制相移键控（PDM-BPSK）的超长距离传输。与PS-QPSK的13,640 km相比，PDM-BPSK能够实现超过14,040 km的传输距离。然而，由于符号率较低，PS-QPSK可显著降低接收机复杂度。
