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Simulation and experimental results have shown that the combination of two kinds of codes to modulate phase-shift pulse Brillouin optical time domain analysis (PSP-BOTDA) pump pulse for distributed strain measurement provides higher SNR than that of using only one code system, and better spatial resolution than dual Golay codes PSP-BOTDA. In preliminary experiments, 10cm spatial resolution measurement...
Distributed optical fiber sensors by using Brillouin optical time-domain analysis (BOTDA) have been developed extensively by many researchers. Coding pulsed pump light of the BOTDA is an effective way to improve the signal-to-noise ratio (SNR). This article reports a new way to configure electrical signals that are amplified by an AC-coupled highspeed amplifier and then fed into an electro-optic modulator...
This paper proposes and analyzes the employment of Dual Golay Codes in the PSP-BOTDA system for the application of fiber optics distributed strain sensor. In the previous research, Golay codes generated through the complementary sequences method were used in PSP-BOTDA in order to improve its signal to noise ratio (SNR). There were four optical signals involved in order to analyze the typical Golay...
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