S.K. Morshnev - Dr.Sc. (Phys.-Math.), Leading Research Scientist, Kotelnikov IRE RAS (Fryazino Branch) Ya.V. Przhiyalkovskiy - Research Scientist, Kotelnikov IRE RAS (Fryazino Branch). Е-mail: yankus.p@gmail.com S.A. Vasilyev - Ph.D. (Phys.-Math.), Senior Research Scientist, Fiber Optics Research Center of the RAS

The radiation spectrum, reflected from the Bragg gratings of different length in spun-fiber were investigated. It is shown that if the grating length much less than the fiber spin pitch there is a wavelength shift of a spectrum depending on input polarization state. This shift decreases with increase of grating length. The theoretical model describing this dependence is developed.

 

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