基于自相位调制和偏移滤波的全光2R再生

All-optical 2R Regeneration Based on Self-phase Modulation and Offset Filtering

理论和实验研究了基于光纤中自相位调制效应和偏移滤波的全光2R再生,实现了因放大的自发辐射噪音而恶化的数据信号的再生.数值研究了输入平均功率对信号再生的影响,结果表明,通过控制输入光纤的平均功率,Q值在5到12的40Gb/s归零码信号再生后均可实现Q值和幅度抖动的改善.最后进行了基于高非线性色散位移光纤的10Gb/s归零码ASE恶化数据信号的再生实验,误码率为10-9时标准时的再生功率代价仅为0.1dB.

All-optical 2R regeneration based on self-phase modulation in the fiber and subsequent offset filtering was investigated numerically and experimentally to restore optical data signals degraded due to amplified spontaneous emission （ASE） noise. Numerical results show that Q factor and amplitude jitter can be improved for 40 Gb/s return to zero （RZ） signals with Q factor between 5 and 12 when the fiber input average power is chosen suitably. The regeneration experiment on 10 Gb/s RZ ASE-degraded data signal was demonstrated using a highly-nonlinear dispersion shifted fiber,and a power penalty of only 0.1 dB was measured at 10^-9 bit-error ratio.