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对单模低双折射光纤的克耳效应进行了理论分析和实验研究。采用相关检测的方法得到了克耳效应引起的光强变化的波形，利用数字信号处理技术对实验数据进行分析，得到25℃时单模低双折射光纤的克耳系数为5．4×10－（16）m／V－2。理论分析和实验结果证明了利用单模低双折射克耳效应进行高电压传感的可行性。
The Kerr effect of single-mode low birefringent fiber is theoretically analyzed and experimentally studied. The waveforms of the light intensity changes induced by Kerr effect were obtained by the correlation detection method. The experimental data were analyzed by using digital signal processing technology. The Kerr coefficient of single mode low birefringence fiber at 25 ℃ was 5.4 × 10- (16) m / V-2. The theoretical analysis and experimental results prove the feasibility of high-voltage sensing using single-mode low birefringence Kerr effect.