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Performance analysis of the sweep-free Brillouin optical time-domain analyzer (SF-BOTDA)

Using simultaneous multiple pumps and probes to estimate the Brillouin Frequency Shift along an optical fiber, as in the Sweep-free BOTDA (SF-BOTDA) technique, saves measurement time but involves quite a few tradeoffs. Through simulations this work studies the role of the number of tones, their granularity and the desired spatial resolution and dynamic range on the obtained BFS accuracy for different signal to noise ratios and number of averages.