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The development of highly non-linear silicon devices is a fundamental step towards the realization of low power optical signal processing devices. In order to achieve this final goal several constraints have to be overcome. In particular, the next generation of opto-electronic integrated devices must be ultra-compact, compatible with foundry model fabrication processing and exhibit low power consumption...
Silicon photonics is a well established platform for the development of fully integrated optical devices for optical communication systems. In particular, the strong modal confinement typical of silicon waveguides enables the exploitation of nonlinear effects with much lower optical power levels. Different structures for all-optical signal processing have been reported in the last years, such as all...
We demonstrate that travelling-wave four-wave mixing in coupled resonators overcomes the bandwidth limitations of wavelength conversion in single resonators, preserving the efficiency enhancement: 28-dB gain over silicon waveguides of the same length is here achieved.
Continuously tunable, optically-controlled variable delay line based on dynamic Brillouin grating is exploited for automated synchronization of switching signals in a network node, enabling asynchronous contention resolution with packet priorization.
Novel all-optical implementations for logic AND and XOR gates are experimentally demonstrated at 2.5 Gbit/s based on cavity-enhanced four-wave-mixing (CE-FWM) combined with optical injection locking phenomena in monolithically integrated semiconductor ring lasers (SRLs). An all-optical AND gate with simultaneous wavelength conversion has been achieved using CE-FWM. An XOR function is demonstrated...
We demonstrated 6-THz wavelength conversion of a 10 Gbit/s DPSK signal via four-wave-mixing in a silicon coupled resonator optical waveguide. The device provides 16 dB enhancement of the conversion efficiency with negligible phase information distortion.
Reconfigurable all-optical multicast at multi-gigabit data rates has been realised using simultaneous multi-wavelength conversion based on cavity-enhanced four-wave-mixing in a monolithically integrated semiconductor ring laser. The scheme provides high efficiency, low power penalty, and cost-effectiveness.
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