In a given hybrid OIC, a GaAs waveguide (n = 3.59) is butt-coupled to a LiNbO3 Bragg modulator (nBulk = 2.2). (i) If an optical beam of vacuum wavelength λ0 = 1.15 μm is traveling in the GaAs...

In a given hybrid OIC, a GaAs waveguide (n = 3.59) is butt-coupled to a

LiNbO3 Bragg modulator (nBulk = 2.2). (i) If an optical beam of vacuum

wavelength λ0 = 1.15 μm is traveling in the GaAs waveguide, incident on

the modulator at an angle of 93◦ relative to the direction of propagation of the

acoustic waves, for what acoustic wavelength Λ will the modulator produce

the maximum output optical intensity? (ii) At what angle will the optical

beam be traveling once it has left the modulator (in air)?