Time- and Frequency-Domain Characteristics of Direct-Detection Acousto-Optic Delay Lines
- Authors: Hasanov A.R.1, Hasanov R.A.1, Ahmadov R.A.1, Agayev E.A.1
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Affiliations:
- Azerbaijan National Aviation Academy
- Issue: Vol 62, No 9 (2019)
- Pages: 817-824
- Section: Article
- URL: https://journals.rcsi.science/0543-1972/article/view/246784
- DOI: https://doi.org/10.1007/s11018-019-01700-3
- ID: 246784
Cite item
Abstract
We discuss various details regarding the practical use of direct-detection acousto-optic delay lines, and develop a mathematical model for the input signal. An expression for the transient response was obtained and used to determine the acousto-optic delay line response to an boxcar input signal. This expression for the transient response was used to determine the cutoff frequency of the acousto-optic delay line and derive an equation for the impulse response to determine the acousto-optic transmission coefficient of the acoustooptic delay line as a function of frequency. The resulting equations are confirmed by numerical examples. The numerical results were in turn experimentally validated using the direct-detection acousto-optic delay line model developed in this paper. The theoretical and experimental results were compared using two criteria: the output response to a boxcar input signal and the cutoff frequency of the frequency response curve. The cutoff frequency was obtained using an oscillogram of the output pulse and the experimentally determined frequency response. A comparison of the theoretical and experimental results indicated that the time- and frequency-domain equations for the response curves have high potential for time-domain processing of broadband analog signals.
About the authors
A. R. Hasanov
Azerbaijan National Aviation Academy
Author for correspondence.
Email: afi.g.gasanov.51@mail.ru
Azerbaijan, Baku
R. A. Hasanov
Azerbaijan National Aviation Academy
Email: afi.g.gasanov.51@mail.ru
Azerbaijan, Baku
R. A. Ahmadov
Azerbaijan National Aviation Academy
Email: afi.g.gasanov.51@mail.ru
Azerbaijan, Baku
E. A. Agayev
Azerbaijan National Aviation Academy
Email: afi.g.gasanov.51@mail.ru
Azerbaijan, Baku