If the waveguide of Prob. 4.4 were to be modified so as to support one additional mode, would it be practical to produce the required change in n by using the electro-optic effect? (Assume a uniform...

If the waveguide of Prob. 4.4 were to be modified so as to support one additional mode, would it be practical to produce the required change in n by using

the electro-optic effect? (Assume a uniform electric field to be applied over the

thickness of the waveguide in the direction normal to the surface, with r41 =

1.4 × 10−12 m/V).