Full text of article: Russian language.

Abstract:
The necessity of influence multibeam interference is shown on the form of chirped pulse, extending on fiber-optic line or network active components. For successful realization of symbolical coding in similar networks an invariance of transmitted information parameter consisting in the form of bending around capacity of pulse. The mathematical modeling of the optical pulse form changes in case of action multibeam interference, dispersion, nonlinear change of a refraction parameter and attenuation was carried out for revealing required bending around and chirp. Search of the pulse form was carried out on a minimum deviation of the initial form from for particular example. It is established, that the essential factors of distortions are multibeam interference especially with action of the maximum orders and dispersion; nonlinear refraction and attenuation are displayed more poorly (near 5%). Peak pump attenuated from 10%. In a number of cases the distortion connected with first interferention order, can be compensate by selection of bending around capacity.

Key words:
chirped pulse, fiber-optical line, multibeam interference, symbolical modulation.

References:

1. Computer networks. Principles, technology, protocols / V.G. Olifer, N.A. Olifer. – St-Peter.: Piter, 2003. – 864 p. – (in Russian).
2. Andre Jirar. Instruction for technology and testing of WDM system. – Moscow: EXFO, 2001. – 252p. – (in Russian).
3. Ossovsky, S.S. Neuron networks for information control. – Moscow: Finance and statistics, 2004. – 344p. – (in Russian).
4. Sultanov, A.H., Gayfullin, R.R., Vinogradova, I.L. Method of working ability correction of networks Ethernet and PON with на complex optical signal. – Ufa: Gilem, 2007. – 150 p. – (in Russian).
5. Agrawal, G.P. Nonlinear fiber optics. – Boston: Academic Press, 2001. –  466 p. – (in English).
6. Agrawal, G.P., Boyd, R.W. Contemporary nonlinear optics. – Boston: Academic Press, 2006. –  478 p. – (in English).
7. Ahmediev, N.N., Ankevich, A. Solitons. – Moscow, Fizmatlit, 2003. – 304 p. – (in Russian).
8. Recommendations G.958. Digital line systems, based on synchronous digital hierarchy for fiber optical. Moscow: Informsviaz. – 2000.–56 p. – (in Russian).
9. Krinov, I.V., Fomin, V.V. Distortion of optical pulse form in fiber amplifier, caused by chirp of semiconduction laser light wave // Science conf. of MFTI. – Dolgoprudniy, MFTI, 2001, - p. 645 – 651. – (in Russian).
10. ITU-T Rec. G.959.1 - Physical Layer Aspects of Optical Networks (2.98). – (in English).
11. Fotiady, А.А., Kiyan, R.V., Shakin, O.V. Observing of passive modulate of quality factor in erbium laser // Letters in JTF. – 2001. – V. 27, № 10. – P. 79 – 85. – (in Russian).
12. Zuzin, Y.B. Method of forming pulses of laser // SciTecLibrary.ru. – 2002. - № 9. – P. 180 – 181. – (in English).
13. Fiber optical systems: questions of working ability estimate / А.H. Sultanov, R.G. Usmanov, I.A. Sharifgaliev, I.L. Vinogradova. - Moscow: Radio & Svyaz, 2005. – 374 p. – (in Russian).
14. Kivshar, YSС., Agrawal, G.P. Optical solitons. From fibers to photons. – Moscow, Fizmatlit, 2005. – 648 p. – (in Russian).
15. Rjevsky, S.P. Interference fiber-optical devices from computed technique and control system : Tezis.. techn. science: 05.13.05. - Aproved.11.05.92. - Ufa, 1989. – 197p. – (in Russian).
16. Snayder А., Lav J. Theory of optical fibers. – Moscow: Radio & Svyaz, 1987.– 656 p. – (in Russian).
17. ITU-T Rec. 45.104-97. Joints of optical synchronous digital hierarchy systems. Moscow: Informsviaz. – 1997.– 27p. – (in Russian).
18. Vinogradova, I.L. Characteristics of double resonator Fabry-Perot interferometer // Radiotehnika. - 2002.- № 6. - p. 33 - 37. – (in Russian).
19. Author certificate № 1697035, G 02 B 6/28. Fiber optical splitter / R.A. Tuhvatullin, L.Е. Vinogradova, I.L. Vinogradova, S.P. Rjevsky, Bulletin № 45. – 1991. – (in Russian).
20. Gordienco, V.N. Multicannel telecommunications systems. - Moscow: Goryacha-Liniya Telecom, 2005. - 416 p. – (in Russian).
21. Sultanov, A.H., Gayfullin, R.R. Program of distortions account for fiber optical pulse form in translate line. Reg. № 50200500849. Inform. bulletin «Algorithms & programs», - № 6, 2007. - 7 p. – (in Russian).

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