Measurement of the autocorrelation and spectrum of optical pulses does not allow us either to determine the amplitude and phase of the pulse or even uniquely determine its intensity profile. The frequency resolved optical gating (FROG) is usually employed for full characterization of optical pulses. The project is aimed at the FROG method based on cross-phase modulation in a microstructured optical fiber. This method allows an unique characterization of optical pulses. The microstructured fiber can be designed in such a way that it possesses low dispersion and high nonlinear coefficient not achievable in conventional fibers. It is possible to achieve good sensitivity due to a long interaction length so that this method is suitable for the characterization of optical pulses with energies below 10pJ. We would like to analyze theoretically two measurement set-ups and realize one of them experimentally, which would allow us to develop a new method of data amalysis.
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