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Modulation frequency-shift technique for dispersion measurements in optical fibres using LEDs

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Abstract

Reliable phase-shift measurements in optical fibres were performed by downshifting the modulation frequency of the optical signal to the low-frequency range before detection. This technique maintains the full resolution of the high-frequency modulation and increases the sensitivity allowing accurate group delay measurements in single-mode fibres over a 300 nm spectral range using a single LED.

References

    1. 1)
      • L.G. Cohen . Comparison of single-mode fiber dispersion measurement techniques. J. Lightwave Technol. , 958 - 966
    2. 2)
      • B. Costa , M. Puleo , E. Vezzoni . Phase-shift technique for the measurement of chromatic dispersion in single-mode optical fibres using LEDs. Electron. Lett. , 1074 - 1076
    3. 3)
      • F.M.E. Sladen , H.S. Reichard , S. Uvegess . Chromatic dispersion measurements on long fibre lengths using LEDs. Electron. Lett. , 841 - 842

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content/journals/10.1049/el_19870753
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