D. Gindre et al., COHERENT PICOSECOND PARAMETRIC AMPLIFICATION THROUGH A KERR-INDUCED INDEX GRATING IN A SINGLE-MODE FIBER, Optics communications, 112(1-2), 1994, pp. 75-79
Picosecond parametric amplification in a single-mode fiber is experien
ced and explained by means of phase modulation through a Kerr-induced
refractive index grating in the material. In the visible range (strong
group-velocity dispersion), the experimental gain is 17 dB.