Gain flattened and improved EDFA using microbending long-period fibre gratings

Gain flattened and improved EDFA using microbending long-period fibre gratings

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A new method for flattening the gain spectrum of erbium-doped fibre amplifiers (EDFAs) is proposed. This method is based on microbending long-period fibre gratings, that are simply fabricated by bending the fibre. By adjusting the spectral profiles of the filters mechanically, a gain flatness of <1 dB has been obtained, and gain improvement of <5.32 dB over the 33 nm wavelength range at two different pump powers of 34 and 86 mW, respectively.


    1. 1)
      • Dynamic erbium-doped fiber amplifier based on active gain flattening with fiber acoustooptic tunable filters
    2. 2)
      • Gain flattened erbium-doped fiber amplifier using simple equalizing film
    3. 3)
      • Gain flattening by using dual-core fiber in erbium-doped fiber amplifier
    4. 4)
      • Gain equalization of EDFAs with Bragg gratings
    5. 5)
      • Broad-band erbium-doped fiber amplifier flattened beyond 40 nm using long-period grating filter
    6. 6)
      • Erbium-dopedfiber amplifier with flattened gain spectrum
    7. 7)
      • Analysis of optical gain enhanced erbium-doped fiber amplifiers using optical filters

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