&lt;title&gt;Structural minimization of fiber optic sensor nets for monitoring of dangerous materials storage&lt;/title&gt;

Morozov, Oleg G.; Morozov, Gennady A.; Kourevin, Valery V.; Kouprianov, Vladimir G.; Denisenko, E. P.; Alyushina, Svetlana G.

doi:10.1117/12.887292

Cited by 5 publications

(9 citation statements)

References 4 publications

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“…Fig.4. Setup for instantaneous frequency measurement of microwave signals A single-frequency radiation in a symmetrical twofrequency conversion device was suggested in [7][8][9]. The prototype modulator that is produced by the Perm Scientific Industrial Instrument Company was chosen as an electro-optic Mach-Zehnder modulator with the frequency band of up to 6 GHz, small weight and dimensions of 65x12mm.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

Microwave spectroscopy of the fiber Bragg grating

Morozov

Denisenko

2015

2015 International Conference on Antenna Theory and Techniques (ICATT)

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In this paper the modulation methods for poly-harmonic microwave signals on optical carrier forming and detecting are demonstrated, especially for applications in fiber-optic sensor systems. The methods of the single-frequency optical signal conversion into the poly-harmonic ones with the difference frequency between the components of SHF, UHF and partly EHF bands has been proposed. In order to form the poly-harmonic signals we used the amplitude Mach-Zehnder modulator (JDSU) or the polarization modulator (Versawave Technologies). The resulting probing radiations were used for microwave spectroscopy of separate or combined into groups fiber Bragg gratings, as sensors of measuring systems. Application of microwave probing signals with detection in the frequency domain or by the envelope allowed simplifying methods for the spectral characterization of gratings and improvement of technical and economic performance of fiber-optic sensor systems.

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Section: Discussion Of the Resultsmentioning

confidence: 99%

Microwave spectroscopy of the fiber Bragg grating

Morozov

Denisenko

2015

2015 International Conference on Antenna Theory and Techniques (ICATT)

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“…A series of functional optical-sensing OTFDR systems, including fiber-optic reflectometres, multiplexed fiber Bragg grating (FBG) or fiber Fabry-Perault interferometers (FFPI) sensors are introduced. Fully distributed fiber-optic strain sensing system based on Brillouin frequency shift is highlighted 9,19 , and Brillouin nonlinear effect 20 and four wave mixing compensating system 21 based on optimized TFSPR is also presented. Miscellaneous OTFDR applications in biosensors 22 , two frequency signal forming for photonic microwave filters synthesis [23][24] and measuring of instantaneous microwave frequency 25 are also reviewed.…”

Section: Information Structure Of Symmetric Two Frequency Oscillationmentioning

confidence: 99%

Theory of symmetrical two-frequency signals and key aspects of its application

Il'in

Morozov²,

Il'in

2014

SPIE Proceedings

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We have proposed and demonstrated in recent years an unique technique to synthesize the two-frequency radiation by manipulating the amplitude and the phase of initial one-frequency lightwave. The output frequencies are symmetrical relatively to suppressed initial one and have strongly equal amplitudes and alternative phases. In this paper the principle of two-frequency radiation synthesis is summarized. The information structure of two-frequency radiation is examined and key aspects of its application are discussed concerning to the theory of precision spectral characterization of resonant structures and theory of quasi-harmonic oscillations and potential noise immunity.

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“…One of possible ways to decide specified problems of FBG reflection spectra characterization is based on FBG probing by the two-frequency radiation which average frequency at calibration point is adjusted on the central wavelength of FGB spectrum, and its detune and-or amplitudes difference between components are used as informative factors for definition of enclosed physical field parameter [4,41]. The two-frequency measurement technique finds more and more appendices in various problems, for example: research of atmospheric gases absorption contours [42,43], measurement of dielectric coverings thickness [44], the analysis of FBG spectrum contour [45], an estimation of communication lines selective devices temperature drift [46], etc.…”

Section: Two-frequency Characterization Of Fbg Reflection Spectramentioning

confidence: 99%

“…The analysis of amplitudes and phases of the received components can be spent separately after their allocation by optical filters or time division in the disperse environment; however these methods return us to problems of difficult spectral verification [47]. Therefore it was offered to spend processing of two-frequency radiation envelope [41].…”

Section: Two-frequency Characterization Of Fbg Reflection Spectramentioning

confidence: 99%