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Gain enhancement in cascaded fiber parametric amplifier with quasi-phase matching: theory and experiment

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4 Author(s)
Jaeyoun Kim ; Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA ; Boyraz, O. ; Lim, J.H. ; Islam, M.N.

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

Published in:

Lightwave Technology, Journal of  (Volume:19 ,  Issue: 2 )

Date of Publication:

Feb 2001

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