参量效应在零色散波长附近的位相匹配

研究了几种掺杂情况下光纤折射率的变化导致光纤零色散波长的变化，提出一种用于参量过程中位相匹配的数值分析方法，对光纤中材料色散与波导色散引起的参量过程中的位相失配进行了数值分析，给出相应的随泵浦波长和泵浦与信号间的频移而变化的位相失配空间曲面，结果表明，在零色散波长附近有最大的频移可满足位相匹配，且此规律不随零色散波长移动而发生变化

Phase Matching for Optical Parameter Effect near Zero Dispersion Wavelength of Single Mode Fiber

The shifts of zero dispersion wavelength for a few of impure fiber due to the Change of refractive index of fiber have been researched. A numerical analysis method used for calculating phase matching with the parametric effect is put forward, the phase mismatching from the material and waveguide dispersion of the fiber in the parametric effect is calculated by the numeric method and the spatial curvature surfaces of phase mismatching Changed with both pump light wavelength and frequency shift between the pump and signal light are given. The results show that there is the biggest flequency shift meeting the condition of the phase matching near the zero dispersion position and this rule doesn't changed with the shift of zero dispersion.