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Polarization noise in single mode fibres and its reduction by depolarizers

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Abstract

Fluctuations of the state of polarization in single mode fibres due to environmental conditions such as vibrations cause intensity noise if elements with polarization-dependent loss are inserted into the fibre system. Diffraction gratings, which are key elements for wavelength division multiplex-single mode fibre systems, exhibit a strong polarization dependence of loss. The polarization noise, originating from the combination of single mode fibres and diffraction gratings, is investigated experimentally. A drastic deterioration of the signal/noise ratio is observed, which is even more severe than modal noise with multimode fibres. Depolarizing devices, which reduce this kind of noise sufficiently, are presented and examined.

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Authors and Affiliations

  1. AEG-TELEFUNKEN, Forschungsinstitut Ulm, D-7900, Ulm, West Germany

    B. Hillerich & E. Weidel

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  1. B. Hillerich
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  2. E. Weidel
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Hillerich, B., Weidel, E. Polarization noise in single mode fibres and its reduction by depolarizers. Opt Quant Electron 15, 281–287 (1983). https://doi.org/10.1007/BF00619897

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  • DOI: https://doi.org/10.1007/BF00619897

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