A low-latency optical switch architecture using integrated um SOI-based contention resolution and switching

2018 ◽  
Author(s):  
Miltiadis Moralis-Pegios ◽  
Nikos Terzenidis ◽  
Matteo Cherchi ◽  
Mikko Harjanne ◽  
Timo Aalto ◽  
...  
Keyword(s):  
Optical Switch ◽  
Low Latency ◽  
Contention Resolution ◽  
Switch Architecture

scholarly journals High-port low-latency optical switch architecture with optical feed-forward buffering for 256-node disaggregated data centers

2018 ◽  
Vol 26 (7) ◽  
pp. 8756 ◽  
Author(s):  
Nikos Terzenidis ◽  
Miltiadis Moralis-Pegios ◽  
George Mourgias-Alexandris ◽  
Konstantinos Vyrsokinos ◽  
Nikos Pleros
Keyword(s):  
Data Centers ◽  
Optical Switch ◽  
Low Latency ◽  
Feed Forward ◽  
Switch Architecture ◽  
Disaggregated Data

Hybrid buffer‐based optical packet switch with negative acknowledgment for multilevel data centers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sumit Chandra ◽  
Shahnaz Fatima ◽  
Raghuraj Singh Suryavanshi
Keyword(s):  
Data Centers ◽  
Web Applications ◽  
Optical Switch ◽  
Contention Resolution ◽  
Multilevel Data ◽  
All Optical ◽  
Optical Buffering ◽  
Different Types ◽  
Packet Switch ◽  
Novel Design

AbstractIn the present scenario, data centers serve many functionalities like storage, transfer of data, supporting web applications, etc. In data centers, various levels of hierarchy different types of switches are required; therefore, multifunctional data centers are desired. This paper discusses a novel design for optical switch which can be placed at various levels of hierarchy. In the proposed design, multifunctionality contention resolution schemes which consider electronic and optical buffering and all-optical negative acknowledgment (AO-NACK) are considered. In buffering technologies, contending packets are stored in either in electronic RAM or in fiber delay lines. In case of the AO-NACK scheme, contending packets are blocked, and a negative acknowledgment is sent back to the transmitting node and blocked packets are retransmitted. For various considered schemes, Monte Carlo simulation have been performed, results in terms of packet loss probability are presented, and it has been found that the performance of optical buffering is much superior to electronic buffering and AO-NACK schemes. It is found that, in the AO-NACK scheme, the numbers of retransmitted packets due to contention blocking are 33,304 which can be reduced to 7, by using a small amount of buffer at each node.

A High-Radix, Low-Latency Optical Switch for Data Centers

2015 ◽  
Author(s):  
Dan Alistarh ◽  
Hitesh Ballani ◽  
Paolo Costa ◽  
Adam Funnell ◽  
Joshua Benjamin ◽  
...  
Keyword(s):  
Data Centers ◽  
Optical Switch ◽  
Low Latency ◽  
High Radix

scholarly journals Optimize the Power Consumption and SNR of the 3D Photonic High-Radix Switch Architecture Based on Extra Channels and Redundant Rings

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Jie Jian ◽  
Mingche Lai ◽  
Liquan Xiao
Keyword(s):  
High Performance ◽  
Process Variation ◽  
Optical Switch ◽  
Signal To Noise Ratio ◽  
Thermal Sensitivity ◽  
Optical Network ◽  
Research Field ◽  
Switch Architecture ◽  
Static Power ◽  
High Radix

The demand from exascale computing has made the design of high-radix switch chips an attractive and challenging research field in EHPC (exascale high-performance computing). The static power, due to the thermal sensitivity and process variation of the microresonator rings, and the cross talk noise of the optical network become the main bottlenecks of the network’s scalability. This paper proposes the analyze model of the trimming power, process variation power, and signal-to-noise ratio (SNR) for the Graphein-based high-radix optical switch networks and uses the extra channels and the redundant rings to decrease the trimming power and the process variation power. The paper also explores the SNR under different configurations. The simulation result shows that when using 8 extra channels in the 64×64 crossbar optical network, the trimming power reduces almost 80% and the process variation power decreases 65% by adding 16 redundant rings in the 64×64 crossbar optical network. All of these schemes have little influence on the SNR. Meanwhile, the greater channel spacing has great advantages to decrease the static power and increase the SNR of the optical network.

scholarly journals Performance evaluation of hybrid optical switch architecture for data center networks

2016 ◽  
Vol 21 ◽  
pp. 1-15 ◽  
Author(s):  
Muhammad Imran ◽  
Martin Collier ◽  
Pascal Landais ◽  
Kostas Katrinis
Keyword(s):  
Performance Evaluation ◽  
Data Center ◽  
Optical Switch ◽  
Data Center Networks ◽  
Switch Architecture

A low-latency high-port count optical switch with optical delay line buffering for disaggregated data centers

2018 ◽  
Author(s):  
George Mourgias-Alexandris ◽  
Miltiadis Moralis-Pegios ◽  
Nikos Terzenidis ◽  
Konstantinos Vyrsokinos ◽  
Nikos Pleros
Keyword(s):  
Data Centers ◽  
Delay Line ◽  
Optical Switch ◽  
Low Latency ◽  
Optical Delay Line ◽  
Optical Delay ◽  
Disaggregated Data
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