П. В. Волков, Д. А. Семиков, О.С. Вязанкин, Александр Владимирович Горюнов, А. Ю. Лукьянов, Анатолий Данилович Тертышник
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Метод детектирования малых колебаний на основе гомодинной демодуляции с тандемным низкокогерентным интерферометром
The paper proposes a method for detecting small oscillations in the length of interference fiber-optic sensors, which makes it possible to compensate for the problem of slow drift of the working point with a remote sensor. The result is achieved by combining homodyne demodulation methods with a tandem low-coherence interferometer. Theoretically and experimentally, the possibility of detecting acoustic effects in the operating frequency band of 4 kHz with a sensitivity of up to 0.3 nm has been shown.
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