Fading rates in coherent OTDR

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Fading rates in coherent OTDR

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© The Institution of Electrical Engineers
Published

The fading rates of the backscatter signal from a single-mode optical fibre under quasimonochromatic pulse excitation are measured experimentally using a homodyne OTDR system. A method of increasing the fading rates to facilitate efficient signal averaging is discussed.

Inspec keywords: optical fibres; time-domain reflectometry; fading

Other keywords: optical time domain reflectometry; fading rates; quasimonochromatic pulse excitation; signal averaging; fading rates increase method; coherent OTDR; backscatter signal; homodyne OTDR system; single-mode optical fibre

Subjects: Fibre optics; Optical refractometry and reflectometry; Optical variables measurement; Fibre optics and fibre waveguides

References

    1. 1)
      • P. Healey , R.C. Booth , B.E. Daymond-John , B.K. Nayar . OTDR in single-mode fibre at 1.5 μm using homodyne detection. Electron. Lett. , 360 - 362
    2. 2)
      • P. Healey . Fading in heterodyne OTDR. Electron. Lett. , 30 - 32
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