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Improved algorithms for determining the strain of optical fibers using Brillouin reflectometers
摘要： The issues of improved algorithms for determining the strain of optical fibers using Brillouin reflectometers are investigated. Structure charts of devices for early diagnostics of optical fibers are presented. Adaptive algorithms for construction of Brillouin reflectograms: patterns of Brillouin frequency shift and strain distribution along the optical waveguide are considered. Reference Brillouin reflectograms for different optical fibers from the database are required to correctly detect the “problem” segments (segments of optical fibers with increased mechanical strain or with transformed temperature) in the optical waveguide.
关键词： Mandelstam – Brillouin scattering,Brillouin frequency shift,Optical fiber,Brillouin reflectometer,strain
更新于2025-09-16 10:30:52
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Classification of the factors causing the change of the optical fiber strain by using the Brillouin reflectograms
摘要： A classification of the factors causing the change of the optical fiber strain by using the Brillouin reflectograms is considered. The differences of Brillouin reflectograms with strain along the optical waveguide are discussed under various impacts: temperature and mechanical longitudinal stretching. Reference Brillouin reflectograms for different kinds of optical fibers from the database are capable of improving a process of classification of potentially hazardous sections (sections of optical fibers with high mechanical strain or changed temperature) in the optical fiber. The results presented in this paper allow us on the basis of the analysis of Brillouin multi-reflectograms to identify a factor that has a predominant impact on the fiber strain in the investigated sections of the optical fibers in fiber optical communication lines.
关键词： Mandelstam – Brillouin scattering,Brillouin frequency shift,temperature,backscattered signal,Optical fiber,strain
更新于2025-09-16 10:30:52
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[IEEE 2019 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO) - Russia (2019.7.1-2019.7.3)] 2019 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO) - Investigation of the Influence of the Optical Fiber Structure on the Mandelstam – Brillouin Backscatter Characteristics
摘要： The influence of structure of optical fibers, varieties and concentration of ligating additives, number of layers on the behavior of the Mandelstam – Brillouin scattering in optical fibers is discussed in this paper. The results of analysis and comparison study of the results for different optical fibers are presented.
关键词： Brillouin reflectometry,optical fiber,spectrum profile,acoustic mode,Mandelstam – Brillouin scattering
更新于2025-09-11 14:15:04