Measurement of Rayleigh backscattering at 1.55 mu m with 32 mu m spatial resolution

Rayleigh backscattering at a wavelength of 1.55 mu m is measured in standard single-mode fiber with a spatial resolution of 32 mu m and a dynamic range of over 30 dB. A minimum reflection sensitivity of -148 dB is the best reported to date using optical low-coherence reflectometry.<
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