Single–fiber bidirectional transmission systems using the same wavelength for both directions suffer from reflection induced interference. Experimental results demonstrate the dependence of system performance and of the threshold of the forward error correction (FEC) on signal waveform variations induced by fiber effects. Larger signal distortions lead to slightly larger impact of the interference, but reduce the shift of the FEC threshold to smaller bit error ratios.

中文翻译：

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单纤双向系统中信号反射的性能影响

在两个方向上使用相同波长的单光纤双向传输系统会受到反射引起的干扰。实验结果证明了系统性能和前向纠错 (FEC) 阈值对光纤效应引起的信号波形变化的依赖性。较大的信号失真会导致干扰的影响稍大，但会将 FEC 阈值的偏移减少到较小的误码率。