Tabulated modes

solprop.modes.tabulated builds waveguide modes from arrays of effective index, for a guide solved elsewhere (a finite-element solver, a measurement) or sampled from one of solprop’s own modes. Its public names are:

• IndexTable: a passive mode’s complex effective index, and optionally its effective area, tabulated against frequency and interpolated;

• TabulatedHollowMode: an evacuated hollow guide’s table with a gas fill added at a fixed transverse wavenumber;

• TabulatedMode: a filled table’s whole linear response, with Marcatili transverse fields;

• sample_index_table(): sample an existing mode into a dense table;

• MIN_TABLE_POINTS: the fewest samples (four) a table may have, which the cubic interpolant needs. solprop.nonlinear.gnlse uses the same interpolant for its tabulated dispersion and re-exports the constant.

Use the tabulated-mode guide to choose between an evacuated and a filled table, inspect interpolation error, and ensure the full active band lies within the data. The private shared base is not a public constructor.