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We investigated the impact of the pillars diameter on the frequency band in the case of 2D photonic crystal guide. The obtained results show that the bandwidth (and its borders positions) changes with changing of the pillars diameter. We also have shown that by changing the diameter of some pillars we can design filters with various characteristics.
We investigated the impact of geometrical behaviors on operation parameters in the case of microstructured optical fiber with a ring of air holes. The found results show that at any of considered types defects mode field will have two pronounced maximums. We also have shown that random variations of inclusions diameter can increase total mode field power.
In this report results of modeling and experimental researches of the photonic crystal fibers positioning control method based on the analysis of a measured optical field intensity and calculation of its discrete values autoconvolution are represented. Efficiency and accuracy of a method were checked by test image moving on the set size supervised by the certified measuring instrument of small moving.
An automatic control technique of the cross-section microstructured optical fibers geometrical parameters is developed. This method can be used both in the control preform and in the process of drawing into an automated process control system for identify and predict the occurrence of the defect.
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