Panoramic rf spectrum analysis with high productivity using acousto-optic components

Boris S. Gurevich; Oleg V. Aveltsev; Sergei V. Andreyev; Andrey V. Belyaev; Alexei A. Rodiontsev; Valentine V. Vorobiev; Salmor A. Alymkulov

doi:10.1117/12.447656

6 November 2001 Panoramic rf spectrum analysis with high productivity using acousto-optic components

Boris S. Gurevich, Oleg V. Aveltsev, Sergei V. Andreyev, Andrey V. Belyaev, Alexei A. Rodiontsev, Valentine V. Vorobiev, Salmor A. Alymkulov

Author Affiliations +

Proceedings Volume 4453, Materials and Devices for Photonic Circuits II; (2001) https://doi.org/10.1117/12.447656
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

One of the most important applications of acousto-optic spectrum analyzers (AOSA) is providing of the radio air panoramic observation. It is necessary to provide simultaneously wide operation frequency band and good frequency resolving power on a level with high operation rate for this purpose. These demands are contradictory. Their conjugation is possible if the composition of different kinds of AOSA is used in the total device. Application of AOSA with space and time integration has been analyzed. The optimal values of the frequency subbandwidth and integration time have been determined proceeding from the condition of maximum resolving power (both spatial and temporal) and operation rate. The totally observed frequency bandwidth in the optimized device can attain value of 1..2 GHz and observation time - several seconds. On a level with that the frequency resolving power can be less than 1 kHz. The experimental studies of some AOSA compositions have been reported. We have made the devices on the basis of acousto-optic Bragg cells using tellurium dioxide single crystals in which the slow shear acoustic mode was excited. The experimental study of these devices has demonstrated that the parallel connection of AOSA with space and time integration provides more profitable conditions from the point of view of maximum information transmission capability than earlier proposed AOSA with combined space and time integration.

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Boris S. Gurevich, Oleg V. Aveltsev, Sergei V. Andreyev, Andrey V. Belyaev, Alexei A. Rodiontsev, Valentine V. Vorobiev, and Salmor A. Alymkulov "Panoramic rf spectrum analysis with high productivity using acousto-optic components", Proc. SPIE 4453, Materials and Devices for Photonic Circuits II, (6 November 2001); https://doi.org/10.1117/12.447656

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KEYWORDS

Panoramic photography

Bragg cells

Acousto-optics

Signal processing

Spectral resolution

Spectrum analysis

Charge-coupled devices

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