Title :
Gain enhancement in cascaded fiber parametric amplifier with quasi-phase matching: theory and experiment
Author :
Kim, Jaeyoun ; Boyraz, Özdal ; Lim, Jin H. ; Islam, Mohammed N.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
2/1/2001 12:00:00 AM
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
Keywords :
multiwave mixing; optical communication equipment; optical fibre communication; optical fibre dispersion; optical parametric amplifiers; optical phase matching; optical pumping; 12 dB; cascaded amplification; cascaded fiber parametric amplifier; fiber-optic parametric amplifiers; four-wave mixing; gain enhancement; gain improvement; numerical simulations; overall gain; parametric gain; pump wavelength; quasi-phase matching; spectral characteristic; three-stage dispersion-shifted fiber parametric amplifier; zero-dispersion wavelength; Fiber nonlinear optics; Frequency conversion; Optical fiber amplifiers; Optical fiber dispersion; Optical fiber theory; Optical fibers; Optical mixing; Optical pumping; Optical wavelength conversion; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
