Measurement of Kerr nonlinearity coefficient of fibres using nonlinear polarization rotation

We propose and demonstrate a simple and accurate method to measure the Kerr nonlinearity coefficient of optical fibres. The method is based on the nonlinear polarization rotations caused by cross phase modulation between two lightwaves of different wavelengths co-propagating in fibres. The Kerr nonlinearity coefficients of standard single mode fibre and TrueWaveTM Reduced Slope fibre measured with this method are in good agreement with the published data.