We present an application of the interferometric method for measuring the chromatic dispersion of microstructured birefringent fibers in a wide wavelength range employing a portable spectrometer with resolution of 0.5 nm. The method utilizes an unbalanced Mach-Zehnder interferometer with a tested fiber in one arm and the other arm with a controllable path length. We recorded a series of spectral signals to find the length of the reference arm (with compensated group delay coming from the tested fiber) as a function of wavelength. We also present the results of dispersion measurements in three highly birefringent microstructured fibers manufactured by the Laboratory of Optical Fiber Technology, Maria Curie-Sklodowska University, Lublin, Poland.
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