Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
Fiberhome Telecommunication Technologies Co. Ltd, Wuhan 430074, Hubei, China.
Sci Rep. 2016 Nov 30;6:38181. doi: 10.1038/srep38181.
We present a full-duplex bidirectional data transmission link using twisted lights multiplexing over 1.1-km orbital angular momentum (OAM) fiber. OAM and OAM modes carrying 20-Gbit/s quadrature phase-shift keying (QPSK) signals are employed in the downlink and uplink transmission experiments. The observed mode crosstalks are less than -15.2 dB, and the full-duplex crosstalks are less than -12.7 dB. The measured full-duplex optical signal-to-noise ratio (OSNR) penalties at a bit-error rate (BER) of 2 × 10 are ~2.4 dB in the downlink transmission and ~2.3 dB in the uplink transmission. The obtained results show favorable full-duplex twisted lights multiplexing data transmission performance in a km-scale OAM fiber link.
我们提出了一种全双工双向数据传输链路，使用扭曲光复用在 1.1 公里的轨道角动量（OAM）光纤上。在下行和上行传输实验中，使用承载 20-Gbit/s 正交相移键控（QPSK）信号的 OAM 和 OAM 模式。观察到的模式串扰小于-15.2 dB，全双工串扰小于-12.7 dB。在误码率（BER）为 2×10时，测量得到的全双工光信噪比（OSNR）代价在下行传输中约为 2.4 dB，在上行传输中约为 2.3 dB。所得到的结果表明，在公里级 OAM 光纤链路中，扭曲光复用数据传输性能良好。
