Intensity modulation in two Mach–Zehnder interferometers using plasma dispersion in silicon-on-insulator

We present comparative measurements of two Mach–Zehnder interferometers, one with Y-junction couplers and the other with MMI couplers, both developed in siliconon-insulator technology and using plasma dispersion effect for light phase modulation. Measurements of fiber-to-fiber losses, absorption coefficient, output intensity vs. time and extinction ratio vs. frequency have been performed at λ= 1.3 μm and at λ= 1.55 μm. Results are reported and discussed in this paper. PACS 42.25.Hz; 42.82 Bq; 42.82 Et; 42.82 Gw; 42.79Hp