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- W2047479722 abstract "We experimentally analyzed two different nonlinear fitting methods for a Brillouin optical time domain reflectometery (BOTDR) system. By measuring the spontaneous Brillouin frequency and comparing a Lorentzian fit with a Voigt fit, we confirmed that the accuracy of the Lorentzian fit was higher than that of the Voigt fit. We also performed long-range distributed measurements using coherent detection system with a 36 km long-range optical fiber. The extinction ratio of optical pulse was improved by employing an acousto-optic modulator (AOM). As a result, we could successfully measure the Brillouin frequency shift (BFS) using a Lorentzian fit algorithm in order to calculate applied temperature and strain in the optical fiber." @default.
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- W2047479722 date "2013-05-01" @default.
- W2047479722 modified "2023-09-27" @default.
- W2047479722 title "Analysis of nonlinear fitting methods for distributed measurement of temperature and strain over 36 km optical fiber based on spontaneous Brillouin backscattering" @default.
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- W2047479722 doi "https://doi.org/10.1016/j.optcom.2012.12.012" @default.
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