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Related Experiment Video

Updated: Apr 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

11.4K

Fully programmable and scalable optical switching fabric for petabyte data center.

Zhonghua Zhu, Shan Zhong, Li Chen

    Optics Express
    |April 4, 2015
    PubMed
    Summary

    We developed a new optical switching fabric for data centers using Wavelength Division Multiplexing (WDM) and Space Division Multiplexing (SDM). This adaptable architecture scales efficiently for massive data centers, improving bandwidth and reducing hardware needs.

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    Area of Science:

    • Optical networking
    • Data center architecture
    • Telecommunications

    Background:

    • Data center networks (DCNs) face scalability challenges with increasing traffic demands.
    • Existing network architectures like folded-Clos struggle to efficiently support multi-Petabyte data centers.

    Purpose of the Study:

    • To present a novel, scalable switching fabric for DCNs.
    • To leverage Wavelength Division Multiplexing (WDM) and Space Division Multiplexing (SDM) for enhanced performance.

    Main Methods:

    • Designed a distributed optical switching architecture.
    • Integrated both WDM and SDM technologies.
    • Developed a topology-adaptive fabric suitable for diverse traffic patterns.

    Main Results:

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    Last Updated: Apr 15, 2026

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    • Achieved a converged Elastic Optical Path (EPS) and Optical Circuit Switching (OCS) fabric.
    • Demonstrated superior scalability for data centers with over 1000 racks.
    • Reported a 50% reduction in transceiver count and over 90% improvement in cabling efficiency compared to folded-Clos networks.

    Conclusions:

    • The proposed architecture offers a highly scalable and efficient solution for future data centers.
    • The integration of WDM and SDM technologies provides significant advantages in bandwidth, hardware reduction, and cabling efficiency.