All-Optical Modulation and Ultrafast Switching in MWIR with Sub-Wavelength Structured Silicon

Ultrafast All-Optical Switching by Cross Phase Modulation Induced Wavelength Conversion in Silicon-on-Insulator Waveguides and Ring Resonators

We present new results on ultrafast alloptical wavelength conversion in Silicon-onInsulator waveguides through cross phase modulation. We demonstrate sub-picosecond all-optical switching with 13dB on/off ratio by combining the nonlinear wavelength conversion in the port waveguide with passive filtering using an integrated SOI microring resonator. Introduction Because of its potential for integr...

Ultrafast all-optical switching by cross-absorption modulation in silicon wire waveguides.

We describe the use of two-photon absorption in submicron silicon wire waveguides for all-optical switching by cross-absorption modulation. Optical pulses of 3.2 ps were successfully converted from high power pump to low power continuous-wave signal with a fast recovery time. High speed operation was based on the induced optical absorption from non-degenerate two-photon absorption inside the wa...

Ultrafast all-optical switching via coherent modulation of metamaterial absorption

Ultrafast all-optical modulation on a silicon chip.

We experimentally demonstrate ultrafast all-optical modulation using a micrometer-sized silicon photonic integrated device. The device transmission is strongly modulated by photoexcited carriers generated by low-energy pump pulses. A p-i-n junction is integrated on the structure to permit control of the generated carrier lifetimes. When the junction is reverse biased, carriers are extracted fro...

Ultrafast and bias-free all-optical wavelength conversion using III-V-on-silicon technology.

Using a 7.5 μm diameter disk fabricated with III-V-on-silicon fabrication technology, we demonstrate bias-free all-optical wavelength conversion for non-return-to-zero on-off keyed pseudorandom bit sequence (PRBS) data at the speed of 10 Gbits/s with an extinction ratio of more than 12 dB. The working principle of such a wavelength converter is based on free-carrier-induced refractive index mod...