高色散传输系统中信道内四波混频DPSK信号的误码率
Error Probability of DPSK Signals with Intrachannel Four-Wave-Mixing in Highly Dispersive Transmission Systems
摘要：
采用半解析方法研究了在高色散光纤链路中，具有强脉冲重叠的信道内四波混频（IFWM）的DPSK信号的误码率。根据初始脉冲宽度，系统的平均非线性相移可以从1到2 rad，信噪比（SNR）损失小于1 dB。一个近似的经验公式，有效的惩罚小于2分贝，使用的鬼脉冲的差分相位的方差来估计的惩罚。
英文摘要：
A semi-analytical method evaluates the error probability of DPSK signals with intrachannel four-wave-mixing (IFWM) in a highly dispersive fiber link with strong pulse overlap. Depending on initial pulse width, the mean nonlinear phase shift of the system can be from 1 to 2 rad for signal-to-noise ratio (SNR) penalty less than 1 dB. An approximated empirical formula, valid for penalty less than 2 dB, uses the variance of the differential phase of the ghost pulses to estimate the penalty.
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