en Parametric amplification in zero-dispersion wavelength decreasing photonic crystal fibers تخصصی Special پژوهشي Research In this paper, we investigate for the first time the parametric amplification in photonic crystal fibers (PCFs) with a continuously-decreasing zero-dispersion wavelength along their length. The use of these tapered fibers leads to the reduction of the length required for obtaining a high gain. Results show that although the gain is significantly increased, the gain bandwidth in such tapered PCFs is much narrower in comparison with that of un-tapered PCFs. Also, the gain flatness is quickly decreased with the increase of the input pump power. In this paper, we investigate for the first time the parametric amplification in photonic crystal fibers (PCFs) with a continuously-decreasing zero-dispersion wavelength along their length. The use of these tapered fibers leads to the reduction of the length required for obtaining a high gain. Results show that although the gain is significantly increased, the gain bandwidth in such tapered PCFs is much narrower in comparison with that of un-tapered PCFs. Also, the gain flatness is quickly decreased with the increase of the input pump power. parametric amplification, photonic crystal fibers, dispersion-decreasing fiber, zero-dispersion wavelength parametric amplification, photonic crystal fibers, dispersion-decreasing fiber, zero-dispersion wavelength 181 184 http://opsi.ir/browse.php?a_code=A-10-1-96&slc_lang=en&sid=1 Hassan Pakarzadeh Hassan Pakarzadeh pakarzadeh@sutech.ac.ir 10031947532846001836 10031947532846001836 Yes Shiraz University of Technology Shiraz University of Technology