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Related Concept Videos

Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
Multimachine Stability01:25

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
Distributed Loads01:19

Distributed Loads

Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
Multiple Pipe Systems01:21

Multiple Pipe Systems

Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...

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Related Experiment Video

Updated: Jul 7, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Terabit optical local area networks for multiprocessing systems.

T H Szymanski, A Au, M Lafrenière-Roula

    Applied Optics
    |February 13, 2008
    PubMed
    Summary

    This study presents a scalable optical local area network for multiprocessing systems, utilizing parallel fiber optics and a central CMOS switch core. The design achieves high data bandwidth and offers seamless scalability to terabit capacities.

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    Area of Science:

    • Computer Engineering
    • Optical Networking
    • High-Performance Computing

    Background:

    • Multiprocessing systems require high-bandwidth, scalable interconnects.
    • Existing local area networks (LANs) face limitations in aggregate data throughput for demanding applications.
    • Transitioning from electrical to optical interconnects is crucial for future network performance.

    Purpose of the Study:

    • To design and describe a scalable optical local area network (LAN) architecture for multiprocessing systems.
    • To demonstrate a centralized switch core using complementary metal-oxide silicon (CMOS) technology.
    • To explore the scalability of the proposed architecture towards terabit capacities.

    Main Methods:

    • Utilizing parallel-fiber-ribbon optical links for workstation connectivity.
    • Implementing a centralized CMOS switch core on a printed circuit board (PCB).
    • Employing a broadcast-and-select architecture with parallel CMOS integrated circuits (ICs).
    • Fabricating and describing a prototype optoelectronic switch core.

    Main Results:

    • Each workstation achieves a data bandwidth of 6.4 Gbits/s using Motorola Optobus fiber technology.
    • A 32-workstation switch core supports an aggregate data bandwidth of 204 Gbits/s.
    • The architecture demonstrates scalability through CMOS optoelectronic ICs with optical input-output, enabling single-chip terabit capacities.

    Conclusions:

    • The proposed optical LAN architecture offers a scalable solution for multiprocessing systems.
    • The design leverages commercially available parallel fiber technology and established network markets.
    • The architecture provides a smooth transition path from electrical to optical domains, adapting to technological advancements.