Characteristics and Reduction of Coherent Fading Noise in Rayleigh Backscattering Measurement for Optical Fibers and Components

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada

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91 Citations (Scopus)


The characteristics of fading noise in Rayleigh backscattering measurements made with coherent lightwaves such as in Coherent-OTDR and Coherent-OFDR are studied. The effects of frequency shift averaging on fading noise reduction are clarified theoretically and the relation between measurement accuracy and other parameters, such as spatial resolution and frequency variation range are derived. The calculated results of loss measurement accuracy are in good agreement with experimental data. The formula can also be applied to low-coherence interferometric OTDR.

Original languageEnglish
Pages (from-to)982-987
Number of pages6
JournalJournal of Lightwave Technology
Issue number7
Publication statusPublished - 1992 Jul


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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