Gold, M.P. and Hartog, A.H.
Analysis of backscatter waveforms from single-mode fibres
At 8th European Conference on Optical Communication (ECOC-8), France.
21 - 24 Sep 1982.
Backscatter measurements have been made on single-mode fibres with high precision and good spatial resolution. Apparent changes in local attenuation are revealed which occur over short fibre lengths and result from backscatter factor variations. The latter are compared to known fluctuations in fibre parameters. It is found that the backscatter signal is less sensitive to diameter variations in single-mode fibres than in multimode fibres. Longitudinal variations of numerical aperture, scattering loss coefficient or core radius preclude an accurate determination of local attenuation derived from backscatter measurements made at one end only of the fibre
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