Experimental study of the light waves expansion in Walsh functions, determination of its complex amplitude, and the switching of optical channels based on the use of three-dimensional superposed hol

Vyatcheslav V. Orlov; Anatoly R. Bulygin

doi:10.1117/12.179127

29 June 1994 Experimental study of the light waves expansion in Walsh functions, determination of its complex amplitude, and the switching of optical channels based on the use of three-dimensional superposed holograms of co-orthogonal wave fields

Vyatcheslav V. Orlov, Anatoly R. Bulygin

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Proceedings Volume 2240, Advances in Optical Information Processing VI; (1994) https://doi.org/10.1117/12.179127
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

3D superposed holograms of co-orthogonal wave fields are investigated. Two operations were performed when using these holograms. One of them presents the expansion of the wave field of the object in set Walsh functions. The mentioned hologram was also used for switching of optical channels. The objects were presented by a set of 7 luminous points having different phases. Wave fields of the objects were expanded in a set of 8 Walsh functions. Complex amplitudes of the object waves were calculated from the measured coefficients of expansion. The switching of one input optical channel to 8 output channels was accomplished by phase modulation of incoming wave corresponding to Walsh functions values.

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Vyatcheslav V. Orlov and Anatoly R. Bulygin "Experimental study of the light waves expansion in Walsh functions, determination of its complex amplitude, and the switching of optical channels based on the use of three-dimensional superposed holograms of co-orthogonal wave fields", Proc. SPIE 2240, Advances in Optical Information Processing VI, (29 June 1994); https://doi.org/10.1117/12.179127

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KEYWORDS

Holograms

Channel projecting optics

Switching

Light

Modulation

Phase modulation

Diffraction

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