Abstract
We first discuss a hybrid photonics-electronics approach in which large Ethernet packets are switched using a photonic switch and smaller ones are switched using an electronic packet switch. It uses compression and scrambling to allow error-free photonic switching of native Ethernet frames. The issues associated with the splitting of packets of a flow into two streams of short and long packets for switching through electronic and photonic switches, respectively, are packet reordering and contention control.
We then demonstrate a pure fast photonic packet switch that addresses the aforementioned issues by including three functions: photonic frame wrapper/un-wrapper, time-slot synchronization, and separation of control and data paths. The photonic frame wrapper ensures all packet sizes can be switched through the photonic fabric, while a time-slot synchronization scheme aligns packets of all nodes at the photonic switch despite different network fiber lengths.
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Mehrvar, H., Ma, H., Yang, X., Wang, Y., Goodwill, D., Bernier, E. (2018). Hybrid OPS/EPS Photonic Ethernet Switch and Pure Photonic Packet Switch. In: Testa, F., Pavesi, L. (eds) Optical Switching in Next Generation Data Centers. Springer, Cham. https://doi.org/10.1007/978-3-319-61052-8_9
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DOI: https://doi.org/10.1007/978-3-319-61052-8_9
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