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Statistics of backscattering in single-mode fiber

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Abstract

Rayleigh backscattering in single-mode fibers is helpful in loss measurements by OTDR and OFDR but troublesome when causing feedback to a semiconductor laser or when interfering with the signal in interferometric sensors. We show that the backscattered fraction of power Q = Iscatt/Iinput may fluctuate strongly for even minute variations of optical frequency ω or ambient temperature T, pressure p, or strain ε, possibly imposing severe limitations on applications.

© 1981 Optical Society of America

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