(a) Sketch the shape of the electric-field distribution versus depth for the waveguide modulator structures of Problems 9.1 and 9.7c. assuming that the applied voltages have been adjusted to produce...

(a) Sketch the shape of the electric-field distribution versus depth for the

waveguide modulator structures of Problems 9.1 and 9.7c. assuming that the

applied voltages have been adjusted to produce equal waveguide thickness in

each case.

(b) Would the difference in these two field distributions have a more pronounced effect on the profile of Δn versus depth in a lightly doped or

more heavily doped semiconductor substrate.