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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 19,
  • Issue 2,
  • pp. 247-
  • (2001)

Gain Enhancement in Cascaded Fiber Parametric Amplifier with Quasi-Phase Matching:Theory and Experiment

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Abstract

We report a novel gain enhancement scheme for fiber-optic parametric amplifiers utilizing cascaded amplification and quasi-phase matching (QPM). The theory and method of QPM for four-wave mixing (FWM) are developed for the first time to our knowledge. In experimental implementations of the theory,we achieve >12 dB gain improvement in a three-stage dispersion-shifted (DS) fiber parametric amplifier. A 16-dB overall gain is obtained with 11 nm separation between zero-dispersion wavelength and pump wavelength. The experimental results show good agreement with theory and simulations. The influence of QPM on spectral characteristics of parametric gain is investigated with numerical simulations.

[IEEE ]

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