We report on the experimental demonstration of a novel silicon based fully integrated nonlinear Mach Zehnder device. A standard silicon waveguide is used as a nonlinear arm, conversely a large mode SU-8 waveguide acts as a purely linear arm. Given this asymmetry, an intensity dependent phase shift can be introduced between the two interferometric arms. Thanks to a fine tuning of the silicon arm optical properties, a low power, ultrafast, picosecond operation is demonstrated, allowing the use of this device for ultrafast all-optical signal processing in high density communication networks.
- Mach Zehnder
- optical switching
Lacava, C., Strain, M., Minzioni, P., Cristiani, I., & Sorel, M. (2013). Integrated nonlinear Mach Zehnder for 40 Gbit/s all-optical switching. Optics Express, 21(18), 21587-21595. https://doi.org/10.1364/OE.21.021587