Methods for estimation of optical fiber curvature distribution

Dashkov, Michael V.; Burdin, Vladimir A.; Dashkov, Victor М.; Evtushenko, Alexandr S.; Yablochkin, Konstantin A.

doi:10.1117/12.2631759

Cited by 2 publications

(4 citation statements)

References 8 publications

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“…To estimate the length of segments with noticeable attenuation coefficient changes the distributed analysis using sliding window was applied 18,19 . The length of window size was 750 m that allows to ensure a correct measurement of attenuation coefficient for reflectogramms having signal/noise ratio more than 0.1 dB.…”

Section: The Resultsmentioning

confidence: 99%

Attenuation distribution changes of optical fiber in cable at cyclic temperature variations

Dashkov,

Bourdine,

Nizhgorodov

et al. 2023

Optical Technologies for Telecommunications 2022

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The experimental study of attenuation distribution changes of optical fiber in cable due cyclic temperature variations is represented in paper. It was observed that attenuation coefficient changes due temperature effect varies in irregular manner, that can be caused by redistribution of fiber curvature along cable. The fiber segments corresponding to the outer cable coils on the drum are most affected by temperature cycling, that can be due high thermal inertia of cable drum. The length of fiber segment with noticeable attenuation rising is approximately 500 m. The irregular local attenuation changes demonstrate the optical fiber curvature redistribution in cable due cyclic temperature variation and also can be used for estimation of variation of mechanical stresses.

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Section: The Resultsmentioning

confidence: 99%

Attenuation distribution changes of optical fiber in cable at cyclic temperature variations

Dashkov,

Bourdine,

Nizhgorodov

et al. 2023

Optical Technologies for Telecommunications 2022

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show abstract

Section: Introductionmentioning

confidence: 99%

“…As usual the methods for distributed estimation of fiber curvature are based on backscattering thechnology [1][2][3][4][5] . The methods based on analysis of the additional losses caused by fiber bends are described in papers 1,3,5 . They are based on the measurement and analysis of Rayleigh backscattering characteristics at various wavelengths.…”

Section: Introductionmentioning

confidence: 99%

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Study of optical fiber curvature distribution changes in cable at cyclic temperature variations

Dashkov,

Bourdine,

Nizhgorodov

2023

Optical Technologies for Telecommunications 2022

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During maintenance of fiber optical communication lines the cyclic seasonal temperature variations can cause movement of optical fibers in loose tubes and redistribution of curvature. This is especially true for aerial suspended optical cables there significant "pushing out" of fiber from tubes in optical closures can be observed after years. In previous papers two methods for estimation of optical fiber curvature distribution based on reflectometric measurement on two wavelength and using polarization reflectometry were proposed. The results of estimation of optical fiber curvature distribution in all-dielectric self-supporting cable during cyclic temperature variation in climatic chamber are represented in paper.

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Methods for estimation of optical fiber curvature distribution

Cited by 2 publications

References 8 publications

Attenuation distribution changes of optical fiber in cable at cyclic temperature variations

Attenuation distribution changes of optical fiber in cable at cyclic temperature variations

Study of optical fiber curvature distribution changes in cable at cyclic temperature variations

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