scholarly journals Design Trade-offs for Cost-effective Multimode Fiber Channel Equalizers in Optical Data Center Applications

2014 ◽  
Author(s):  
Kai Xu ◽  
Bo Wang ◽  
Guy Torfs ◽  
Xin’an Wang ◽  
Johan Bauwelinck ◽  
...  
Keyword(s):  
Data Center ◽  
Cost Effective ◽  
Optical Data ◽  
Multimode Fiber ◽  
Trade Offs ◽  
Fiber Channel ◽  
Channel Equalizers

ROTOS: A Reconfigurable and Cost-Effective Architecture for High-Performance Optical Data Center Networks

2020 ◽  
Vol 38 (13) ◽  
pp. 3485-3494
Author(s):  
Xuwei Xue ◽  
Fulong Yan ◽  
Kristif Prifti ◽  
Fu Wang ◽  
Bitao Pan ◽  
...  
Keyword(s):  
Data Center ◽  
High Performance ◽  
Cost Effective ◽  
Optical Data ◽  
Data Center Networks

Self restorable intra data center interconnect based on multimode fiber and free-space optics

2021 ◽  
Vol 60 (03) ◽  
Author(s):  
Jawad Mirza ◽  
Aadil Raza ◽  
Ahmad Atieh ◽  
Saeed Iqbal ◽  
Salman Ghafoor
Keyword(s):  
Data Center ◽  
Free Space ◽  
Free Space Optics ◽  
Multimode Fiber ◽  
Space Optics

Spectrum-Sharing-Maximized Approaches with Shared-Path Protection in Elastic Optical Data Center Networks

2021 ◽  
pp. 1-1
Author(s):  
Bowen Chen ◽  
Yu Lei ◽  
Yunfei Jiang ◽  
Qi Chen ◽  
Jinbing Wu ◽  
...  
Keyword(s):  
Data Center ◽  
Spectrum Sharing ◽  
Optical Data ◽  
Data Center Networks ◽  
Path Protection ◽  
Shared Path Protection

The flexible resource management in optical data center networks based on machine learning and SDON

2020 ◽  
Vol 39 ◽  
pp. 100594
Author(s):  
Congying Zhi ◽  
Wei Ji ◽  
Rui Yin ◽  
Jinku Feng ◽  
Hongji Xu ◽  
...  
Keyword(s):  
Machine Learning ◽  
Resource Management ◽  
Data Center ◽  
Optical Data ◽  
Data Center Networks ◽  
Flexible Resource

ADAPTIVE DATA DISSEMINATION IN MOBILE SENSOR NETWORKS

2009 ◽  
Vol 10 (04) ◽  
pp. 435-457
Author(s):  
ATHANASIOS KINALIS ◽  
SOTIRIS NIKOLETSEAS
Keyword(s):  
Sensor Networks ◽  
Data Dissemination ◽  
High Mobility ◽  
Cost Effective ◽  
Sensor Nodes ◽  
Inhibition Mechanism ◽  
Delivery Ratio ◽  
Message Delivery ◽  
Network Parameter ◽  
Trade Offs

Motivated by emerging applications, we consider sensor networks where the sensors themselves (not just the sinks) are mobile. Furthermore, we focus on mobility scenarios characterized by heterogeneous, highly changing mobility roles in the network. To capture these high dynamics of diverse sensory motion we propose a novel network parameter, the mobility level, which, although simple and local, quite accurately takes into account both the spatial and speed characteristics of motion. We then propose adaptive data dissemination protocols that use the mobility level estimation to optimize performance, by basically exploiting high mobility (redundant message ferrying) as a cost-effective replacement of flooding, e.g. the sensors tend to dynamically propagate less data in the presence of high mobility, while nodes of high mobility are favored for moving data around. These dissemination schemes are enhanced by a distance-sensitive probabilistic message flooding inhibition mechanism that further reduces communication cost, especially for fast nodes of high mobility level, and as distance to data destination decreases. Our simulation findings demonstrate significant performance gains of our protocols compared to non-adaptive protocols, i.e. adaptation increases the success rate and reduces latency (even by 15%) while at the same time significantly reducing energy dissipation (in most cases by even 40%). Also, our adaptive schemes achieve significantly higher message delivery ratio and satisfactory energy-latency trade-offs when compared to flooding when sensor nodes have limited message queues.

Towards cost-effective and low latency data center network architecture

2016 ◽  
Vol 82 ◽  
pp. 1-12 ◽  
Author(s):  
Ting Wang ◽  
Zhiyang Su ◽  
Yu Xia ◽  
Bo Qin ◽  
Mounir Hamdi
Keyword(s):  
Data Center ◽  
Network Architecture ◽  
Cost Effective ◽  
Low Latency ◽  
Data Center Network ◽  
Latency Data

Analysis and Optimization of a Passive Micromixer With Curved-Shaped Baffles for Efficient Mixing With Low Pressure Loss in Continuous Flow

2010 ◽  
Author(s):  
Cesar A. Cortes-Quiroz ◽  
Alireza Azarbadegan ◽  
Emadaldin Moeendarbary ◽  
Mehrdad Zangeneh
Keyword(s):  
Pressure Loss ◽  
Cost Effective ◽  
Optimization Method ◽  
Secondary Flows ◽  
Design Parameters ◽  
Mixing Efficiency ◽  
Outlet Section ◽  
Optimization Strategy ◽  
Mixing Index ◽  
Trade Offs

Numerical simulations and an optimization method are used to study the design of a planar T-micromixer with curved-shaped baffles in the mixing channel. The mixing efficiency and the pressure loss in the mixing channel have been evaluated for Reynolds number (Re) in the mixing channel in the range 1 to 250. A Mixing index (Mi) has been defined to quantify the mixing efficiency. Three geometric dimensions: radius of baffle, baffles pitch and height of the channel, are taken as design parameters, whereas the mixing index at the outlet section and the pressure loss in the mixing channel are the performance parameters used to optimize the micromixer geometry. To investigate the effect of design and operation parameters on the device performance, a systematic design and optimization methodology is applied, which combines Computational Fluid Dynamics (CFD) with an optimization strategy that integrates Design of Experiments (DOE), Surrogate modeling (SM) and Multi-Objective Genetic Algorithm (MOGA) techniques. The Pareto front of designs with the optimum trade-offs of mixing index and pressure loss is obtained for different values of Re. The micromixer can enhance mixing using the mechanisms of diffusion (lower Re) and convection (higher Re) to achieve values over 90%, in particular for Re in the order of 100 that has been found the cost-effective level for volume flow. This study applies a systematic procedure for evaluation and optimization of a planar T-mixer with baffles in the channel that promote transversal 3-D flow as well as recirculation secondary flows that enhance mixing.

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