TE modes in dielectric slab waveguide
[be,kc,ac,fc,err] = dguide(f,a,n1,n2,Nit)
[be,kc,ac,fc,err] = dguide(f,a,n1,n2) (equivalent to Nit=3)
frequency in GHz
half-width of slab in cm
refractive indices of slab and cladding (n1>n2)
number of Newton iterations (default Nit=3)
propagation wavenumbers of the supported TE modes in rads/cm
cutoff wavenumbers inside slab in rad/cm
cutoff wavenumbers outside slab in nepers/cm
cutoff frequencies below f in GHz
approximation error in determining kc,ac
dguide(f,a,n1,n2,Nit) determines TE modes in dielectric slab waveguide.
f = 30; a = 0.5; n1 = 2; n2 = 1; Nit = 3; [be,kc,ac,fc,err] = dguide(f,a,n1,n2,Nit)
This function uses the functions dslab.