A method for the measurement of the nonlinear-refractive index coefficient in single-mode optical fibers is presented. It takes advantage of the high sensitivity of the acousto-optic interaction effect in optical fibers to the fiber properties. Direct measurement of the nonlinear-refractive index change resulting from cross-phase modulation between a probe and a pump signal is obtained from the fiber's acousto-optic interaction performance. It is a non-interferometric method in which a very short length of fiber (<0.25 m) is required.A method for the measurement of the nonlinear-refractive index coefficient in single-mode optical fibers is presented. It takes advantage of the high sensitivity of the acousto-optic interaction effect in optical fibers to the fiber properties. Direct measurement of the nonlinear-refractive index change resulting from cross-phase modulation between a probe and a pump signal is obtained from the fiber's acousto-optic interaction performance. It is a non-interferometric method in which a very short length of fiber (<0.25 m) is required.

中文翻译：

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一种测量极短光纤非线性折射率的方法

提出了一种测量单模光纤中非线性折射率系数的方法。它利用了光纤中的声光相互作用效应对光纤特性的高灵敏度。由探头和泵浦信号之间的交叉相位调制引起的非线性折射率变化的直接测量是从光纤的声光相互作用性能中获得的。它是一种非干涉测量方法，需要非常短的光纤长度（<0.25 m）。提出了一种测量单模光纤非线性折射率系数的方法。它利用了光纤中的声光相互作用效应对光纤特性的高灵敏度。由探头和泵浦信号之间的交叉相位调制引起的非线性折射率变化的直接测量是从光纤的声光相互作用性能中获得的。它是一种非干涉测量方法，其中需要非常短的光纤 (<0.25 m)。