What is the answer to Problem 4.4 if the wavelength is λ0 = 1.15μm? A planar asymmetric waveguide is fabricated by depositing a 2.0μm thick layer of Ta2O5 (n = 2.09) onto a quartz substrate (n =...

What is the answer to Problem 4.4 if the wavelength is λ0 = 1.15μm?

A planar asymmetric waveguide is fabricated by depositing a 2.0μm thick

layer of Ta2O5 (n = 2.09) onto a quartz substrate (n = 1.5).

(a) How many modes can this waveguide support for light of 6328 A (vacuum ˚

wavelength)?

(b) Approximately what angle does the ray representing the highest-order

mode make with the surface of the waveguide?