Multiple frequencies analysis in tasks of FBG based instantaneous frequency measurements

Airat J. Sakhabutdinov; Oleg G. Morozov; Aleksandr A. Ivanov; Gennady A. Morozov; Rinat Sh. Misbakhov; Sergey V. Feofilaktov

doi:10.1117/12.2318741

6 June 2018 Multiple frequencies analysis in tasks of FBG based instantaneous frequency measurements

Airat J. Sakhabutdinov, Oleg G. Morozov, Aleksandr A. Ivanov, Gennady A. Morozov, Rinat Sh. Misbakhov, Sergey V. Feofilaktov

Author Affiliations +

Proceedings Volume 10774, Optical Technologies in Telecommunications 2017; 107740Y (2018) https://doi.org/10.1117/12.2318741
Event: XV International Scientific and Technical Conference on Optical Technologies in Telecommunications, 2017, Kazan, Russian Federation

Abstract

This article describes the design principles of optoelectronic system for instantaneous frequency measurement of microwave signals based on the use of amplitude-phase modulation conversion of single optical carrier into symmetrical dual-frequency ones for additional frequency separation according its wavelength, its modulation by unknown frequency and subsequent “frequency-amplitude” measurement conversion in fiber Bragg grating with Gaussian reflection profile along with the variations of schemes for realization of this method with the corresponding spectrums. Such approach increases the signal-to-noise ratio and allows measuring of several unknown frequencies simultaneously. Distinction and measurement of the instantaneous frequencies made depending on the amplitudes and modulation indexes of the signals received at the photodetector.

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Airat J. Sakhabutdinov, Oleg G. Morozov, Aleksandr A. Ivanov, Gennady A. Morozov, Rinat Sh. Misbakhov, and Sergey V. Feofilaktov "Multiple frequencies analysis in tasks of FBG based instantaneous frequency measurements", Proc. SPIE 10774, Optical Technologies in Telecommunications 2017, 107740Y (6 June 2018); https://doi.org/10.1117/12.2318741

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