Approximation method for calculation of output response parameters of acousto-optic demodulator on pulsed input influence

A. R. Hasanov; Ruslan Hasanov; E. A. Agayev; R. A. Ahmadov; A. G. Huseynov; R. A. Allahverdizade

doi:10.3103/S0735272723070051

Authors

A. R. Hasanov National Aviation Academy, Baku, Azerbaijan https://orcid.org/0000-0003-4141-5969
Ruslan Hasanov National Aviation Academy, Baku, Azerbaijan
E. A. Agayev National Aviation Academy, Baku, Azerbaijan https://orcid.org/0000-0002-9861-2624
R. A. Ahmadov National Aviation Academy, Baku, Azerbaijan
A. G. Huseynov National Aviation Academy, Baku, Azerbaijan
R. A. Allahverdizade National Aviation Academy, Baku, Azerbaijan

DOI:

https://doi.org/10.3103/S0735272723070051

Keywords:

demodulation, pulse, acousto-optic, rise time, transient response, approximation model, photodetector

Abstract

In this paper, there are represented the features of acousto-optic interaction in the context of pulse signal detection. It specifies the necessity of the development of a simpler method for the calculation of a demodulator output signal parameters in case of its feeding with a pulse signal. Approximation models of modulating pulse and a pulse of the photodetector’s output were made based on geometric representation of the photo-elastic interaction. It is shown the main parameter defining the shape of the output pulse is the inertia of the acousto-optic demodulator. It is postulated that this parameter is shaped due to the influence of two factors: an acoustic-optic interaction and a photodetector inertia. For estimation of the degree of influence of these factors, a numerical analysis based on developed models is carried out. The results of theoretic research and numerical analysis are verified with experimental research. It is stated that for the application of a high-performance photodetector, the inertia of the acousto-optic demodulator is defined mainly by space-time parameters of acousto-optic interaction.

References

E. Yar, M. B. Kocamis, A. Orduyilmaz, M. Serin, M. Efe, “A complete framework of radar pulse detection and modulation classification for cognitive EW,” in 2019 27th European Signal Processing Conference (EUSIPCO), 2019, pp. 1–5, doi: https://doi.org/10.23919/EUSIPCO.2019.8903045.
A. M. Rembovskiy, A. V. Ashimikhin, V. A. Kozmin, Radiomonitoring: Problems, methods, equipment, [in Russian]. Moscow: Goryachaya Liniya-Telekom, 2015.
V. V. Proklov, V. N. Ushakov, Acousto-Optic Processors of Spectral Type, [in Russian]. Moscow: Radiotekhnika, 2012.
C. C. Davis, Lasers and Electro-Optics. Cambridge: Cambridge University Press, 2013, doi: https://doi.org/10.1017/CBO9781139016629.
V. I. Balakshii, V. N. Parygin, L. E. Chirkov, Physics of Acoustooptics, [in Russian]. Moscow: Radio i Svyaz’, 1985.
J. N. Lee, A. Vanderugt, “Acoustooptic signal processing and computing,” Proc. IEEE, vol. 77, no. 10, pp. 1528–1557, 1989, doi: https://doi.org/10.1109/5.40667.
V. Y. Molchanov et al., Theory and practice of current acousto-optics, [in Russian]. Moscow: MISiS, 2015.
H. C. Feng, B. Tang, T. Wan, “Radar pulse repetition interval modulation recognition with combined net and domain-adaptive few-shot learning,” Digit. Signal Process., vol. 127, p. 103562, 2022, doi: https://doi.org/10.1016/j.dsp.2022.103562.
A. Y. Solodovnikov, N. A. Kuptsov, V. M. Kunitsyn, A. A. Glizhinskiy, “Analysis of probing signals of radar of radio technical troops,” Alleya Nauk., vol. 1, no. 3, pp. 40–47, 2019.
A. Hasanov et al., “Development of an axonometric model of photoelastic interaction in an acousto-optic delay line and its approbation,” Technol. Audit Prod. Reserv., vol. 5, no. 2(67), pp. 38–45, 2022, doi: https://doi.org/10.15587/2706-5448.2022.267782.
A. R. Hasanov, R. A. Hasanov, R. A. Ahmadov, M. V. Sadikhov, “Approximation method for investigating acousto-optic delay line characteristics,” Radioelectron. Commun. Syst., vol. 64, no. 11, pp. 604–611, 2021, doi: https://doi.org/10.3103/S0735272721110042.
F. Akhmedzhanov, S. Mirzaev, U. Saidvaliev, “Singularities of anisotropy of acoustic attenuation in paratellurite crystals,” in Proceedings of Meetings on Acoustics, 201845045, doi: https://doi.org/10.1121/2.0000937.
H. Zhang, H. Zhao, Q. Guo, Y. Xuan, “Calibration of acousto-optic interaction geometry based on the analysis of AOTF angular performance,” Materials, vol. 16, no. 10, p. 3708, 2023, doi: https://doi.org/10.3390/ma16103708.