AUTHORS: Maksat Kalimoldayev, Aliya Kalizhanova, Waldemar Wójcik, Gulzhan Kashaganova, Saltanat Amirgaliyeva, Azhibek Dasibekov, Ainur Kozbakova, Zhalau Aitkulov

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ABSTRACT: In the result of carried out researches with simulation usage there have been obtained the dependence of the spectral reflectivity characteristics of Bragg gratings on the grating length and on the local changes of the fiber core refraction index, as well, that the spectral reflectivity thereof increases along with the grating length enlargement. Outcomes of mathematical modeling in MATLAB medium and carried out analysis of the light emission in the Bragg grating fiber structure clearly denote the possibility of time impulses control magnitudes extension. In the end it has been concluded, that we can precisely control the dispersive claddings in the fiber-optical line through appropriate selection of the Bragg fiber gratings apodization parameters.

KEYWORDS: - Fiber Bragg gratings, apodization function, fiber-optic sensors, mathematical model.

REFERENCES:

[1] Kashyap R. Fiber Bragg gratings, Academic Press, (1999) London.

[2] Vasiljyev S.А., Medvedkov О.I., Medvedkov I.G., Korolyev А.S., Bozhkov А.S., Kurkov Ye.М., Dianov (2005) Fiber gratings reflection index and their application, Quantum electronics, 35(12): 1085-1103.

[3]Hill K.O., Fujii F., Johnson D.C., Kawasaki B.S. (1978) Photosensitivity on optical fiber waveguides; application to reflection filter fabrication, Applied Physycs Letter, 32: 647-649.

[4]Kersey A.D., Davis M.A., Patrick H.J., LeBlanc M., Koo K.P., Askins C.G., Putnam M.A., Friebele E.J. (1997) Fiber grating sensors, Light wave Technology, 15(8): 1442-1463.

[5]Lopez-Higuera J.M. (2002) Handbook of optical fiber sensing technology, John Wiley & sons, P. 795.

[6]Bilodeau F., Johnson D.C., Theriault S., Malo B., Albert J., Hill K.O. (1995) An all-fiber densewavelength multiplexer/DE multiplexer using photo imprinted Bragg gratings, IEEE Photonics Technology Letters, 7(4):388-390,.

[7]Chai J., Yu Z., Liu Y. (2006) Analysis of the apodization parameter of linearly chirped Bragg gratings for dispersion compensation, School of Science, Beijing University of Posts and Telecommunications, Beijing.

[8]Zhang H. (2014) A novel method of optimal apodization selection for chirped fiber Bragg gratings, Optik 125, 1646– 1649.

[9]Khan S., Islam S. (2012) Determination of the Best Apodization Function and Grating Length of Linearly Chirped Fiber Bragg Grating for Dispersion Compensation, Bangladesh University of Engineering and Technology, Bangladesz.

[10] Wójcik W., Kashaganova G.B. (2015) Study of Bragg fiber gratings spectral characteristics, Materials of the ІІ International scientificpractical conference «Information and telecommunication technologies: education, science, practice», Almaty, Kazakhstan, II vol., pp. 77-81.

[11] Kashaganova G.B. (2016) The influence of various apodization functions on the spectral characteristics of fiber Bragg gratings, Bulletin of КazNТU named after Satbayev К.I., 3(115):302- 311

[12] Li X., Chen X., Yin Y. and Xie S. (2003) A novel apodization technique of variable markspace ratio for fabricating sampled fiber bragg grating, Tsinghua University, China.

[13] Albert J. et al. (1995) Apodisation of the spectral response of fibre Bragg grat-ings using a phase mask with variable diffraction efficiency, Electronic Letters, 31: 222-223.

[14] Malo B., et al. (1995) Apodised in-fiber Bragg grating reflectors photoim- printed using a phase mask, Electronic Letters, 31: 223-225.

[15] Pastor D. et al. (1996) Design of apodized linearly chirped fiber gratings for dispersion compensation, J. Lightwave Technology, 14: 2581-2588.

[16] Keitmann-Curdes O., Brendel B., Marg C., Ermert H. (2002) Optimization of apodization based on the sidelobe pressure energy in simulated ultrasound fields, in: Proc. IEEE Int. Ultrason. Symp.,1677–1680.

[17] Abdullina S.R., Babin S.A., Kablukov S.I., Vlasov A.A. (2007) Simple technique of fiber Bragg gratings apodization by use Proc, Laser Optics 2006: Diode Lasers and Telecommunication Systems, ed. Nikolay N. Rosanov, 6612: 661201 (1-10).

[18] Chuang K.P. et al. (2004) Pure apodized phase-shifted fiber Bragg gratings fabricated by a two-beam interferometer with polarization control, IEEE Photonics Technology Letters, 16: 834-836.

[19] Othonos A., Kalli K. (1999) Fiber Bragg gratings. Artech House.

[20] Albert J., Hill K. O., Malo B. (1995) Apodization of spectral response of fiber Bragg gratings using phase mask with variable diffraction efficiency, Electronic Letters, 31(3): 222-223.