An extrapolation method based on the variable-wavelength interferometry optical Fourier transform technique for fibre birefringence measurement

摘要

The optical Fourier transform patterns of the fibres observed in the exit pupil of the polarizing microscopy objective are analysed. A new extrapolation method based on the variable-wavelength interferometry optical Fourier transform technique is used to increase the accuracy of measurement of the spectral dispersion of the fibre birefringence over the whole visible spectrum. This method is used to overcome the problem of the noisy image at the interference pattern centre.