xx List of Figures
7.19 Schematic cross section of the phase shifter based on carrier
depletion proposed by (a) A. Liu et al. [66] and (b) N.N. Feng
etal.[33].............................. 270
7.20 Phase shift as a function of the driven voltage for an individ-
ual shifter similar to that explained in [66] for different device
lengths and an incident wavelength of λ = 1550 nm. ..... 271
7.21 Scheme of the structure of a micro-ring resonator-based mod-
ulator similar to that analyzed in [2]. . . . . . . . . . . . . . . 273
7.22 Quasi-TM transmission spectrum of a single-couple ring res-
onator[2].............................. 274
7.23 Scheme of the electro-optic modulator described in [120]. . . . 275
7.24 SEM image of the device fabricated by Q. Xu et ...