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Effective excitation of ideal gradient waveguide mode packages with pregiven phase velocities
M.A. Bakharev1, V.V. Kotlyar, V.S. Pavelyev, V.A. Soifer2, S.N. Khonina
Image Processing Systems Institute of RAS
1JSC Scientific and Production Centre “SPEKTR” (Samara)
2Samara State Aerospace University

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Pages: 21-25.

Full text of article: Russian language.

Abstract:
This paper develops an approach to increasing the efficiency of excitation of gradient waveguide modes using diffractive optical elements (DOEs) in the problems of multiplexing fiber-optic communication channels, considered in [1]. A modification of the iterative algorithm [2] is proposed, which allows to significantly increase the efficiency of generation of the target mode composition and, at the same time, to avoid pulse broadening due to intermode dispersion [3] in each communication channel. The paper introduces a concept of an invariant mode package - a special amplitudephase distribution with particular properties of laser radiation modes. The article presents the results of computational experiments on the design and simulation of diffractive optical elements that form invariant mode packages in the target diffraction orders, as well as on the propagation of the generated beams through the Fourier cascade .

Citation:
Bakharev MA, Kotlyar VV, Pavelyev VS, Soifer VA, Khonina SN. Effective excitation of ideal gradient waveguide mode packages with pregiven phase velocities. Computer Optics 1997; 17: 21-25.

References:
  1. Soifer V.A., Golub M.A., Laser Beam Mode Selection by Computer Generated Holograms , CRC Press, 1994.
  2. V.V. Kotlyar, I.V. Nikolsky, V.A. Soifer An algorithm for calculating multichannel formers of Gaussian modes.// Optik V. 98, No. 1, (1994) p. 26-30
  3. A. W. Snyder, J.D. Love. Optical waveguide theory. Chapman and Hall. 1984
  4. Yariv A., Optical electronics, Holt, Rinehart and Winston, New York, 1985.
  5. Doskolovich L.L., Golub M.A., Kazanskiy N.L., Khramov A.G., Pavelyev V.S., Seraphimovich P.G., Soifer V.A., Volotovskiy S.G., Software on diffractive optics and computer-generated holograms. //Proceeding SPIE 2363.
  6. Duparre M., Pavelyev V., Luedge B., Kley B., Kowarschik R., Soifer V. "Forming of selected unimodal complex amplitude distributions by means of novel DOEs of MODAN-type"// Proceedings SPIE 3134.
  7. Solimeno S., Crosignani B., Di Porto P., Guiding, diffraction and confinement of optical radiation, Academic Press, Inc., 1986 .

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