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We experimentally demonstrate a 2,160×2,160 optical circuit switch with a switching time of less than 500 μs, aiming at fast and non-hierarchical intra-datacenter interconnection. The switch comprises delivery-and-coupling switches and wavelength-routing switches based on AWGs. We implemented twin 1×135 AWGs on a monolithic PLC chip.
A new OXC configuration that yields hitless port-count expansion to meet traffic growth at minimum cost is presented. Numerical experiments verify the node configuration offers almost complete routing capability even though it uses small-degree WSSs.
Intra-datacenter traffic is growing more than 20% a year. In typical datacenters, a large number of top-of-rack switches are interconnected via multi-tier electrical switches. The electrical switches necessitate power-consuming optical-to-electrical (OE) and electrical-to-optical (EO) conversion. In addition, the power consumption increases with the growing traffic. To overcome this problem, optical...
We propose a novel optical switch architecture for intra-datacenter interconnection. The proposed switch consists of asymmetric-port-count delivery-and-coupling (DC) switches and wavelength-routing (WR) switches based on arrayed-waveguide gratings (AWGs). To compensate for the insertion loss of the DC switch part and to suppress the passband-frequency deviation inherent in multiple-input-port AWGs,...
We propose a novel optical switch configuration that utilizes erbium-doped fiber amplifiers (EDFAs) and asymmetric-port-count cyclic arrayed-waveguide gratings (AWGs). By optimizing the number of utilized input ports of the cyclic AWGs, our proposed scheme can reduce total switch loss and hence relax requirements for EDFAs in terms of gain and maximum output power. To verify effectiveness of the proposed...
We propose a novel optical-switch configuration for intra-datacenter interconnection that consists of tunable lasers, non-cyclic AWGs, and combinations of small-size optical switches and couplers. We develop an 800×800 switch prototype and its good performance and scalability are verified by experiments.
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