The output signal of a digital optoelectronic processor

Valentin G. Kolobrodov; Grygoriy S. Tymchyk; Mykyta S. Kolobrodov; Anatoliy S. Vasyura; Paweł Komada; Zhanar Azeshova

doi:10.1117/12.2501595

1 October 2018 The output signal of a digital optoelectronic processor

Valentin G. Kolobrodov, Grygoriy S. Tymchyk, Mykyta S. Kolobrodov, Anatoliy S. Vasyura, Paweł Komada, Zhanar Azeshova

Proceedings Volume 10808, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018; 108080W (2018) https://doi.org/10.1117/12.2501595
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018, 2018, Wilga, Poland

Abstract

In this article, we investigate the mathematical model of a digital optoelectronic processor for the purpose of determining the signal at the processor’s output. The study of the model allows us to determine the distortions of the input signal of the processor, which are caused by the matrix spatio-temporal modulator. The developed physical and mathematical model of the processor made it possible to obtain an analytical expression for the signal at the processor’s output. Its analysis shows that the formula for determining the spatial frequency differs significantly from the traditional formula. The spatial frequency depends on positions of the central and side maxima in the first-order diffraction maximum. In this case, the signal spectrum can be determined by measuring the lateral maximum, which is located closer to the optical axis of the processor. This allows to use of smaller matrix detectors, as well as to investigate the signal spectrum beyond the Nyquist frequency of the modulator.

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Valentin G. Kolobrodov, Grygoriy S. Tymchyk, Mykyta S. Kolobrodov, Anatoliy S. Vasyura, Paweł Komada, and Zhanar Azeshova "The output signal of a digital optoelectronic processor", Proc. SPIE 10808, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018, 108080W (1 October 2018); https://doi.org/10.1117/12.2501595

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KEYWORDS

Signal processing

Modulators

Digital signal processing

Optoelectronics

Signal detection

Diffraction

Sensors

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