This paper discusses the architecture of an arrayed waveguide grating router (AWGR)-based low-latency interconnect optical network switch called LIONS, and its different loopback buffering schemes. A proof of concept is demonstrated with a 4 x 4 experimental testbed. A simulator was developed to model the LIONS architecture and was validated by comparing experimentally obtained statistics such as average end-to-end latency with the results produced by the simulator. Considering the complexity and cost in implementing loopback buffers in LIONS, we propose an all-optical negative acknowledgement (AO-NACK) architecture in order to remove the need for loopback buffers. Simulation results for LIONS with AO-NACK architecture and distributed loopback buffer architecture are compared with the performance of the flattened butterfly electrical switching network.
LIONS: An AWGR-Based Low-Latency Optical Switch for High-Performance Computing and Data Centers / Yin, Yw; Proietti, R; Ye, Xh; Nitta, Cj; Akella, V; Yoo, Sjb. - In: IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS. - ISSN 1077-260X. - 19:2(2013). [10.1109/JSTQE.2012.2209174]
LIONS: An AWGR-Based Low-Latency Optical Switch for High-Performance Computing and Data Centers
Proietti R;
2013
Abstract
This paper discusses the architecture of an arrayed waveguide grating router (AWGR)-based low-latency interconnect optical network switch called LIONS, and its different loopback buffering schemes. A proof of concept is demonstrated with a 4 x 4 experimental testbed. A simulator was developed to model the LIONS architecture and was validated by comparing experimentally obtained statistics such as average end-to-end latency with the results produced by the simulator. Considering the complexity and cost in implementing loopback buffers in LIONS, we propose an all-optical negative acknowledgement (AO-NACK) architecture in order to remove the need for loopback buffers. Simulation results for LIONS with AO-NACK architecture and distributed loopback buffer architecture are compared with the performance of the flattened butterfly electrical switching network.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2975490