摘要
建立了在空间上用四阶差分的时域有限差分法的 L iao氏吸收边界 ,证明了四阶差分具有比二阶差分更小的数值色散 .空间上用四阶差分的时域差分法将有助于人们对尺寸较大的物体如光纤等光波导的数值分析 .
It is constructed the Liao′s absorbing boundary condition for the finite difference time domain method with four order difference in space ((2,4)FDTD).The effectiveness of the new method whose numerical velocity error is much less than the ordinary finite difference time domain method with two order difference in both time and space domain has been proved.The method makes the (2,4) FDTD suitable for practical application,especially for simulating devices with harger structures,such as optical fiber waveguides.
出处
《光子学报》
EI
CAS
CSCD
2000年第9期814-818,共5页
Acta Photonica Sinica
基金
国家自然科学基金!( 699770 1 6)
河北省科技专项资金资助项目
