MODE COMPOSITION CONTROL ON OPTICAL TWISTED STRIP OUTPUT

E. P. Kon`kova


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Article in Russian


Abstract
The paper deals with possibility of mode structure control for light scattering in a twisted strip fiber by variation its space geometry. Unlike the known diffraction profiling, an approach is proposed based on control of fiber optic discontinuities caused by fiber twist. On the example of spiral pilling of a twisted strip we show the possibility of distribution changing for light scattering intensity on its output by changing of pilling parameters: radius and winding step. Fiber geometry alteration leads to the alteration for a number of optical modes. The increase of a bending radius and winding step of a fiber leads to the growth of the modes number. Regular optical fields and speckles are registered within this work. Gradual intensity change is observed (both, decrease and increase) from the beam centre to its edges.

Keywords: optical fields, speckles, fiber geometry modeling, optical discontinuities

References
 1.       MorshnevS.K., Gubin V.P., Isaev V.A., Starostin N.I., Sazonov A.I., Chamorovsky Yu.K., Korotkov N.M. Concerning the question about physical model of birefringent spur fiber. Optical Memory and Neural Networks, 2008, vol. 17, pp.258–262. doi: 10.3103/S1060992X08040036
2.       Morshnev S.K., Ryabko M.V., Chamorovsky Y.K. Measuring of an embedded linear birefringence in spun optical fibers. Proceedings of SPIE – The International Society for Optical Engineering,2007, vol. 6594, art. 65940R. doi: 10.1117/12.725616
3.       Kizevetter D.V. Polyarizatsionnye i interferentsionnye effekty v mnogomodovykh volokonnykh svetovodakh. Аvtoref. dis. dr. fiz.-mat. nauk[Polarization and interference effects in multimode optical fibers]. St. Petersburg, SPbSPU Pub., 2008, 36 p.
4.       Trufanov A.N., Smetannikov O.Y., Trufanov N.A. Numerical analysis of residual stresses in preform of stress applying part for PANDA-type polarization maintaining optical fibers. Optical Fiber Technology, 2010, vol. 16, no. 3, pp. 156–161. doi: 10.1016/j.yofte.2010.02.001
5.       Morshnev S.K. Opticheskie svoistva izognutykh volokonnykh svetovodov. Avtoref. dis. dr. fiz.-mat. nauk [Optical properties of the bent fibers. Dr. phys.-math. sci. thesis]. Moscow, IRE im. V.A. Kotel'nikova RAS Publ., 2009, 35 p.
6.       Turunen J. Difraktsionnoe profilirovanie raspredeleniya intensivnosti chastichno prostranstvenno kogerentnogo svetovogo puchka [Diffraction intensity distribution profiling spatially partially coherent light beam]. Patent RF, no. 2343516, 2009.
7.       ShramkoO.A., Rupasov A.V., Novikov R.L., Aksarin S.M. Metod issledovaniya zavisimosti h-parametra anizotropnogo svetovoda ot radiusa izgiba [Analysis method of anisotropic lightguide h-parameter dependence on its bending radius]. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2014, no. 1 (89), pp. 26–31.


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