METHOD OF INTERFEROMETER SIGNAL PHASE MEASUREMENT

. , I. . Deyneka, D. A. Pogorelaya, P. A. Shuklin, M. A. Smolovik


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Abstract

Method of interferometer signal phase measurement for signal processing of fiber-optical phase sensors is proposed. The method permits to compensate an interferometer signal frequency temperature drift by generation a three-stroke form of modulating sawtooth waveform. The linear least-squares method having a single solution is suggested. Results of numerical experiment are given, confirming the accuracy of the designed phase measuring method, and numerical estimates of temperature phase drift are given, set by modulator, and a level of temperature stability, which provide phase measurement order of magnitude equal to 10^(-8) rad.


Keywords: interferometer signal phase, sawtooth modulation, temperature drift of frequency
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