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Optical amplifier configurations with low polarisation sensitivity

Optical amplifier configurations with low polarisation sensitivity

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The sensitivity of optical amplifiers to signal polarisation is avoided with use of configurations in which two amplifiers are combined. We describe experiments with a series and a parallel arrangement of two optical amplifiers. The experiments demonstrate a polarisation-insensitive amplification for both configurations over a spectral range of at least 80 GHz.

References

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      • Grobkopf, C., Ludwig, R., Molt, R., Weber, H.G.: `Polarization insensitive amplifier configurations', Tech. Dig. 1,, 13–17 September 1987, Helsinki, Finland, p. 85–88, ECOC.
    2. 2)
      • O'mahony, M.J.: `Semiconductor laser amplifiers as repeaters', Tech. Dig. 2,, 1–4 October 1985, Venezia, Italy, p. 39–46, IOOC-ECOC.
    3. 3)
      • Simon, J.C., Landousies, B., Vassallo, C.: `Polarisation characteristics of very low reflectivity coatings for semiconductor laser amplifiers', Tech. Dig. 1,, 21–25 September 1986, Barcelona, Spain, p. 249–252, ECOC.
    4. 4)
      • J.C. Simon . Polarisation characteristics of a travelling-wave-type semiconductor laser amplifier. Electron. Lett. , 438 - 439
    5. 5)
      • T. Saitoh , T. Mukai . Travelling-wave laser amplifier with high-saturation output power. Electron. Lett. , 218 - 219
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