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  • Prysmian and Draka Cable Super RadHard 50 / 125 μm Multimode Optical Fibre Cable

    Prysmian Group has developed a revolutionary new product as part of its DrakaEliteTM specialty radiation hardened (RadHard) fibres portfolio. This 503m core diameter Super RadHard multimode fibre (MMF) shows extremely low sensitivity for radiation effects in irradiative environments (e.g. gamma rays, X-flash, neutrons protons) while simultaneously offering high bandwidth.

    By combining the excellent performance of the proprietary deposition process (PCVD) with a full Fluorine-doped design, the Radiation Induced Attenuation (RIA) response of this DrakaEliteTM Super RadHard MMF is significantly improved.

    It allows much more tolerance than standard MIL-PRF-49291 approved Germanium-doped 503m core diameter MMF particularly for dose levels exposure above 10 kGy. In addition, this Super RadHard MMF exhibits a faster recovery time as compared to standard RadHard MMFs. The benefit of this Fluorine-doped Super RadHard MMF compared to the standard Germanium-doped RadHard MMF increases with the total dose, for example by a factor 20 at 1300nm for a cumulated dose of 10kGy. (Note: 1 Gy = 100 Rad).

    Because Radiation Induced Attenuation (RIA) is a strong function of time after dose, dose rate, temperature, system operational wavelength, and system operational power, assessing the RIA performance of different fibres should be conducted as close to conditions in the final application as possible.

    The DrakaEliteTM Fluorine-doped Super RadHard MMF can be used in all cable constructions, including loose tube, tight buffered, ribbon and central tube designs. This fibre complies with or exceeds IEC 60793-2-10 type A1a.1 Optical Fibre Specification, with exception of the Zero-Dispersion wavelength, which is much lower than for regular Germanium-doped GI-MMFs, resulting in strongly reduced chromatic dispersion at 850nm.

    Features:
    • Super RadHard behaviour
    • Coated with the dual layer UV Acrylate

    Advantages:
    • Optimized for use in highly irradiative environments
    • Strongly improved performance compared to regular Germanium-doped fibres
    • Optimized performance in tight-buffer cable applications
    • High resistance to micro-bending


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