Returns the grating order direction unit vectors (u 1 and u 2 ) corresponding to the data from the grating function from 3D simulation. For 2D simulations, use the gratingangle function. See the grating function documentation for information on interpreting N, M, ux, uy for various monitor orientations.
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Syntax |
Description |
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out = gratingu2( "monitorname", ...); |
Same arguments as grating function. |
Examples
This example calculates various grating quantities.
mname="T"; # monitor name N=gratingn(mname); # grating order numbers M=gratingm(mname); u1=gratingu1(mname); # grating unit vectors (can be converted to theta,phi) u2=gratingu2(mname); G=grating(mname); # power to each order (fraction of transmitted power) T=transmission(mname); # total power transmitted through monitor (fraction of source power) # Print all grating orders to prompt. Results will sum to 1. # Then normalize grating results to the injected source power. ?G; # grating results ?G*T; # normalized to source power # find strength and direction of 0,0 grating order nx=find(N,0); # find 0th grating order ny=find(M,0); # find 0th grating order ?"Grating order 0,0 strength: " + num2str( G(nx,ny) ); ?"Grating order 0,0 direction: Ux=" +num2str(u1(nx)) + " Uy=" +num2str(u2(ny)); # image all grating orders, using log scale image(u1,u2,G,"ux","uy","Grating order strength","logplot");
See Also
List of commands , grating , gratingu1 , gratingangle , Direction unit vector coordinates