d 5[um] "孔径" Delta 6.75[um] "孔分离" rb 10[um] "计算域的半径" nbg 1.45 "背景折射率" nair 1 "空气的折射率" wl 1.45[um] 波长 neffMax 1.4454 "预计的最大有效折射率," neffMin 1.429 "预计的最小有效折射率," wlr wl/sqrt(nbg^2-neffMax^2) "径向波长"