i numerically verified that 2l is the limit for the rhs of the characteristic equation. upon deaper reflection i realized that the special case for l=0 is actually useless for my application
collect information from snyder/love about higher order modes with l>>1
i introduced the characteristic equation for large l (wkb approximation) and now it claims to find around 100000 modes for v=2000 in 25s. i'm not sure of correctness, though
read the fimmprop manual. they can only couple 40 modes
i want to find an analytical expression for the integral that occurs for a wedge with an arbitrary angle with respect to the mode fileds, now i compare the numerical integrations
the numerical quadrature shows that the integral is just changed by a factor, when the bend is rotated with respect to mode orientation
i can't figure out how to plot directly into a pdf file from maxima. i think it can only output postscript
i convert the eps file to pdf, this works
plot another diagram for the investigation of the integral
write the equation i just analyzed into the text document