doi: 10.17586/2226-1494-2022-22-2-302-307


Auxiliary arbitrary waveform generator for fiber optic gyroscope

V. N. Kuznetsov, E. V. Litvinov, E. V. Vostrikov, I. G. Deyneka


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Kuznetsov V.N., Litvinov E.V., Vostrikov E.V., Deyneka I.G. Auxiliary arbitrary waveform generator for fiber optic gyroscope. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2022, vol. 22, no. 2, pp. 302–307. doi: 10.17586/2226-1494-2022-22-2-302-307


Abstract
Phase modulation of laser radiation using an auxiliary generator makes it possible to improve the accuracy characteristics of fiber-optic gyroscopes. The authors propose a method for generating a phase modulation signal implemented on the basis of a parallel architecture with the possibility of dynamically changing the signal parameters. A prototype of a compact embedded generator for generating signals with frequencies up to 2.5 GHz is presented. The generator is implemented on a field-programmable gate array, which ensured a compact design and made it possible to include it in the design of a fiber-optic gyroscope. The dynamic change of the generated signal is carried out using a personal computer using the developed specialized software that allows generating arbitrary waveforms. For the developed generator, the spectra of a sinusoidal signal and white noise are presented.

Keywords: arbitrary waveform generator (AWG), Direct Digital Synthesizer (DDS), FPGA, fibre-optic gyroscope

Acknowledgements. This work was done at ITMO University and was supported by the Ministry of Science and Higher Education of the Russian Federation under the Agreement No. 075-11-2019-026 dated November 27, 2019, within the project “The production development of fiber-optic gyroscopes for application in measuring instruments and land vehicle systems”.

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