TE_crossing
- ofiber.planar_step.TE_crossing(V, mode)[source]
Return the TE eigenvalue for a planar waveguide mode.
The eigenvalue, xi, satisfies the eigenvalue equation for the specified TE mode in a planar waveguide.
The solution is found numerically using the Brent method. The only tricky bit is setting the proper range to search within.
- Parameters:
V – the V-parameter for the waveguide
mode – the mode
- Returns:
the eigenvalue. If no eigenvalue, 0 is returned.