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We demonstrate a monolithically-integrated silicon photonic receiver for 100 Gb/s PDM-DQPSK signals. The device is realized with a 2D grating coupler, four Mach-Zehnder delay interferometers with phase shifters and four germanium balanced photodetectors.
A simple structure for all-optical buffering based on re-circulating loop is described. Semiconductor optical amplifiers (SOAs) are used as switching gates in order to store or route the packet to the buffer output. More complex photonic digital functionalities are also proposed considering the SOA-based variable optical buffer as basic block.
Elementary blocks, performing basic operations, are the building elements for complex subsystems implementing all-optical digital processing. They can enable next generation optical networks and optical computing overcoming electronic issues as bandwidth and power consumption.
In order to meet the ever-increasing demand of data communication for future optical networks and optical computing, high-speed photonic digital processing is required. Elementary blocks, performing basic operations are the building elements for more complex subsystems implementing all-optical digital processing. These functions include elementary optical logic gates as well as complex photonic combinatorial...
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