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[ÇóÖú] ¹ØÓÚMATLAB³ÌÐòÉè¼ÆµÄһЩÎÊÌâ ÒÑÓÐ1È˲ÎÓë

ÎÒÐèÒªµÄ³ÌÐòÊÇ£º¼ÆËãÒ»Ôª¶þάABABÐÍßú౽ṹµÄ¹â×Ó¾§Ì壬ÔÚA²ãΪSiO2ÕÛÉäÂÊΪ1.4,B²ãΪTeÕÛÉäÂÊΪ4.6,,d1=d2=350nm,ÆäÖÐA²ãºñ¶È²»±ä£¬B²ãºñ¶ÈÒÔ5nmΪ²½³¤¼õÉÙʱ£¬Æä²¨³¤-͸ÉäÂÊͼ¡£°ïÎÒ¿´Ò»ÏÂÎÒ´íÔÚÄÄÁË£¬ÒªÔõô¸Ä£¬ÎÒÓõÄÊÇ´«Ê侨Õó·¨

clc
clear
close all
n0=1;%n0Ϊ¿ÕÆøÕÛÉäÂÊ
a0=input('ÇëÊäÈëÈëÉä½Ça0:');
N=input('ÇëÊäÈëÐèÒª¼ÆËãµÄÖÜÆÚÊýN:');
C=0.05£»%ßúà±ÏµÊý£¨²½³¤£©
for i = 1:N
if(i>N)
db=0.35-c;
            i=i+1;
        else
                end
for d=1.25:0.001:2.35;%²¨³¤·¶Î§
na=1.4;
nb=4.6;
    a1=asin(n0*sin(a0)/na);%µÚÒ»·Ö½çÃæÕÛÉä½Ç
    a2=asin(na*sin(a1)/nb);%µÚ¶þ·Ö½çÃæÕÛÉä½Ç
    da=0.35;
    p1=2*pi*na*da*cos(a1)/d;%Ïàλ±ä»¯
    p2=2*pi*nb*db*cos(a2)/d;
    u0=4*pi*1e-7;%Õæ¿Õ´Åµ¼ÂÊ
    e0=1e-9/(36*pi);%Õæ¿Õ½éµç³£Êý
    b=sqrt(e0/u0);
    c1=b*cos(a1)*na;%²¨×迹
    c2=b*cos(a2)*nb;
    A1=cos(p1);B1=-i*sin(p1)/c1;C1=-i*c1*sin(p1);D1=cos(p1);
    M1=[A1 B1;C1 D1];%½éÖÊ1´«Ê侨Õó
    A2=cos(p2);B2=-i*sin(p2)/c2;C2=-i*c2*sin(p2);D2=cos(p2);
    M2=[A2 B2;C2 D2];%½éÖÊ2´«Ê侨Õó
    M=(M1*M2)^N;%N¸öÖÜÆÚ×ܵĴ«Ê侨Õó
    A=M(1,1);B=M(1,2);C=M(2,1);D=M(2,2);
    a3=asin(nb*sin(a2)/n0);%Éä³ö½éÖÊʱµÄ³öÉä½Ç
    c0=b*cos(a0)*n0;c00=b*cos(a3)*n0;
    r=(A*c0+B*c0*c00-C-D*c00)/(c0*A+c0*c00*B+C+D*c0);%·´ÉäÂÊ
    r1=r*conj(r);
tr=1-r1;
end

plot(d,tr,'k')% »­Í¼
title('(a) 0');% Ϊµ±Ç°×ø±êϵÌí¼Ó±êÌâ
xlabel('ÈëÉ䲨³¤(um)');ylabel('͸ÉäϵÊý')
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