[分享]利用MATLAB光学仿真（1） [复制链接]

利用菲涅尔公式计算光波在两种介质表面折反射率及折反射能流密度 y3pr(w9A  
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1、光疏射向光密 NRZ>03w  
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clear Dv[ 35[Yh  
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close all |csR"DOqz  
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n1=1,n2=1.45; x@480r  
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theta=0:0.1:90; "+:~#&r  
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a=theta*pi/180; ^PI8Bvs>j  
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rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); _T[m YY  
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rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); ({#M*=&"  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); I:G4i}mA  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); iLD:}yK  
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figure(1) p@+r&Mg%W"  
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subplot(1,2,1); BV01&.<|  
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plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) x-HN]quhe  
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legend('r_p','r_s','|r_p|','|r_s|') p!xCNZ(m  
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xlabel('\theta_i') +>wBGVvS  
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ylabel('Amplitude') yxz"9PE/P  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) !*@sX7H  
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axis([0 90 -1 1]) /"%(i#<)xs  
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grid on $D)Ajd;  
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subplot(1,2,2); .V Cfh+*J#  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) T,D(Xh  
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legend('t_p','t_s','|t_p|','|t_s|') A\v(!yg  
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xlabel('\theta_i') F+3}Gkn  
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ylabel('Amplitude') M'D l_dx-  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) bYKe5y=  
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axis([0 90 0 1]) ',Q|g^rF]  
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grid on awic9uMH  
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Rp=abs(rp).^2; M)JKe!0ad1  
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Rs=abs(rs).^2; \6)]!$F6:  
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Rn=(Rp+Rs)/2; RU_wr<  
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Tp=1-Rp; t.`&Q|a  
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Ts=1-Rs; ?8GggJC  
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Tn=(Tp+Ts)/2; 4Lb!Au|Y  
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figure(2) >3MzsAH\  
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subplot(1,2,1); &xYO6_.  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) %A^V@0K3  
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legend('R_p','R_s','R_n') [<,i}z  
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xlabel('\theta_i') (/a#1Pd&  
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ylabel('Amplitude') 6B=: P3Y  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) ,|RN?1?U  
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axis([0 90 0 1]) iX|K4.Pz{  
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grid on TF1,7Qd  
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subplot(1,2,2); js..k
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plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) R ~ZcTY[8  
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legend('T_p','T_s','T_n') PptVneujI  
a-bj! Rs  
xlabel('\theta_i') tg%#W`  
sW^e D;  
ylabel('Amplitude') m0Geq.  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) W2Ik!wEe&  
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axis([0 90 0 1]) }Be;YIhG  
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grid on yt@7l]I  
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2、光密射向光疏 = ;cTm5d;T  
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clear 4iI4+  
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close all \i'Z(1  
X- ZZLl#  
n1=1.45,n2=1; u*T(n s l  
~].?8C.>*  
theta=0:0.1:90; w^"IR  
W#P`Y< u$  
a=theta*pi/180; kV+%(Gl8  
UCt}\IJ  
rp=(n2*cos(a)-n1*sqrt(1-(n1/n2*sin(a)).^2))./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); >qz#&  
Y}]-o9Rl  
rs=(n1*cos(a)-n2*sqrt(1-(n1/n2*sin(a)).^2))./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); 16
ZyLt  
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tp=2*n1*cos(a)./(n2*cos(a)+n1*sqrt(1-(n1/n2*sin(a)).^2)); |A/H*J,  
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ts=2*n1*cos(a)./(n1*cos(a)+n2*sqrt(1-(n1/n2*sin(a)).^2)); B<Q)z5KK  
H$+@O-  
figure(1) 4*ZY#7h  
Sv_Nb>  
subplot(1,2,1); 9=mc3m:Tb(  
N;`/>R4|I  
plot(theta,rp,'-',theta,rs,'--',theta,abs(rp),':',theta,abs(rs),'-.','LineWidth',2) vc :%  
YF)]B|I  
legend('r_p','r_s','|r_p|','|r_s|') _i_P@I<M|~  
pM^ZC  
xlabel('\theta_i') \h"U+Bv7  
Ptc+ypTu  
ylabel('Amplitude') .g3=L  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) Sx[ eX,q  
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axis([0 90 -1.5 1.5]) P)kJ[Zv>f  
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grid on CLTkyS)C  
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subplot(1,2,2); a'-u(Bw  
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plot(theta,tp,'-',theta,ts,'--',theta,abs(tp),':',theta,abs(ts),'-.','LineWidth',2) o@BV&|  
d[>HxPwo  
legend('t_p','t_s','|t_p|','|t_s|') Y hQ)M5  
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xlabel('\theta_i') RC/45:hZZ  
_6Y+E"@zs  
ylabel('Amplitude') R8cOb*D  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) 4-t^?T:qF  
j.ucv  
axis([0 90 -0.5 3]) hLbWqF  
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grid on >MGWN  
zs~Tu  
Rp=abs(rp).^2; #1/~eIEY  
\nt~K}a  
Rs=abs(rs).^2; 'f!U[Qatg  
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Rn=(Rp+Rs)/2; j)2I+[aoB  
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Tp=1-Rp; Lo~;pvv  
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Ts=1-Rs; 'S1u@p,q  
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Tn=(Tp+Ts)/2; o]~\u{o#.  
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figure(2) |DV?5>>  
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subplot(1,2,1); :{#O  
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plot(theta,Rp,'-',theta,Rs,'--',theta,Rn,':','LineWidth',2) ov,|`FdU^T  
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legend('R_p','R_s','R_n') 4
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(Kwqa"Hk4{  
xlabel('\theta_i') U fyhd
 
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ylabel('Amplitude') \4L ur  
+bS\iw+  
title(['n_1=',num2str(n1),',n_2=',num2str(n2)]) \c -m\|  
R>*z8n  
axis([0 90 0 1]) .P$m?p#  
dgjK\pH`h  
grid on RkE)2q[5  
3l~+VBR_  
subplot(1,2,2); K9lekevB  
Qz,2PO  
plot(theta,Tp,'-',theta,Ts,'--',theta,Tn,':','LineWidth',2) st;i
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hhze5_$_  
legend('T_p','T_s','T_n') kU[hB1D5  
.`}TND~  
xlabel('\theta_i') zak\%yY`  
0+e=s0s.  
ylabel('Amplitude') s`jlE|jtN  
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title(['n_1=',num2str(n1),',n_2=',num2str(n2)])  px<psR5  
pM?~AYWb  
axis([0 90 0 1]) &{V|%u}v  
hBjU(}\3  
grid on dS ojq6M  
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感谢楼主分享

这个在《MATLAB在光学中的应用》这本书里都有

谢谢了楼主分享

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