Vukovic Dragana, Schröder Jochen, Da Ros Francesco, Du Liang Bangyuan, Chae Chang Joon, Choi Duk-Yong, Pelusi Mark D, Peucheret Christophe
Opt Express. 2015 Feb 9;23(3):3640-6. doi: 10.1364/OE.23.003640.
We experimentally demonstrate compensation of nonlinear distortion caused by the Kerr effect in a 3 × 32-Gbaud quadrature phase-shift keying (QPSK) wavelength-division multiplexing (WDM) transmission system. We use optical phase conjugation (OPC) produced by four-wave mixing (FWM) in a 7-mm long silicon nanowire. A clear improvement in Q-factor is shown after 800-km transmission with high span input power when comparing the system with and without the optical phase conjugation module. The influence of OSNR degradation introduced by the silicon nanowire is analysed by comparing transmission systems of three different lengths. This is the first demonstration of nonlinear compensation using a silicon nanowire.
我们通过实验证明了在一个3×32千兆波特正交相移键控（QPSK）波分复用（WDM）传输系统中，克尔效应所引起的非线性失真得到了补偿。我们利用一根7毫米长的硅纳米线中四波混频（FWM）产生的光学相位共轭（OPC）。在将有和没有光学相位共轭模块的系统进行比较时，发现在高跨距输入功率下经过800公里传输后，品质因数有了明显改善。通过比较三种不同长度的传输系统，分析了硅纳米线引入的光信噪比（OSNR）劣化的影响。这是首次利用硅纳米线进行非线性补偿的演示。
