Core Network Evolution: Meeting the capacity challenge

Core Network Evolution: Meeting the capacity challenge

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The consumer trend towards living life online is evolving cloud computing where high-speed machine-to-machine data transfer is increasingly prevalent. To support this new world, core networks constantly face a capacity challenge. In little over two years, 100G systems have gone from commercialization to widespread deployment, but already some hotspots are nearing capacity exhaust. We will explore core network options for raising per-fiber capacity and meeting the future capacity demand challenge.

Register now for this free webinar brought to you by in association with Corning Optical Fiber which will cover the following key areas:

1. Understand the impact of utilization efficiency, packet and circuit switching, flexible grid, parallel optics, wideband WDM, the super-channel, and advanced modulation formats on meeting the capacity challenge

2. Explore the path to 400G and the super vs. single-channel debate

3. Learn from the perspective of an industry leader how new optical fiber innovation is providing solutions for this capacity challenge and the path to capacity-effective 400G and beyond


Tags; Corning Optical Fiber,
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  • Merrion Edwards
    Merrion Edwards October 30, 2012 at 5:14 pm

    Thank you all for attending this webinar. I am signing out now but I will monitor the Q&A page regularly so you can still post any further questions that you have over the next couple of days and I will answer them as they come in. Note also that you or your colleagues can review the webinar again via the on-demand version on the webinar archive webpage.

  • akuchar October 30, 2012 at 4:54 pm

    Will your slides be available for downloading?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:58 pm

      The webinar is available for further on-demand viewing on the webinar archive page: it will be there for some time to enable you to review it at your leisure

  • vgranullaque October 30, 2012 at 4:49 pm

    Thanks, can then low loss help fibers help in an existing network compared to a Greenfield build?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:52 pm

      In an existing network every time you have to do a repair, patch or re-route if you use low loss fiber instead of an equivalent legacy fiber you will begin, from the first day you start to use low loss fiber, to bring down the average attenuation of your network. In time, the attenuation of your network will decrease close to the low levels that are now available on current advanced low attenation fibers. The sooner you start the sooner you get a low loss network.

  • Bernd October 30, 2012 at 4:48 pm

    your data for Germany: peak at path length of 400km? Can this be really true?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:56 pm

      This data was sourced from an IEEE paper: Evolution of Terrestrial Optical System and Core Network Architecture
      A. Gladisch, R.-P. Braun, D. Breuer, A. Ehrhardt, H.-M. Foisel, M. Jaeger, R. Leppla, M. Schneiders, S. Vorbeck, W. Weiershausen, F.-J. Westphal
      Dept. Network Archit., Deutsche Telekom T-Syst. ENPS, Berlin
      IEEE Vol 94, No. 5, May 2006.
      The median link/path lengths as plotted is circa 500km.

  • matthewguinan October 30, 2012 at 4:38 pm

    Thank you for the excellent webinar Merrion. How likely do you think it is that we will need to use large effective area fibers in terrestrial networks?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:44 pm

      It is clear that large effective area in conjunction with ultra-low loss is the best fiber enabler to 400G and beyond. But there is backwards compatibility to the G.652 fiber standard to consider. However, if an operator is building a new greenfield express link that needs to carry very high capacity, it is possible that they may consider using fiber with both large effective area and ultra-low attenuation like Corning® Vascade® EX2000 and Corning® Vascade® EX3000 fibers in a terrestrial scenario. Where G.652 backwards compatibility is required, it is clear that G.652 compliant ultra-low loss fiber like Corning® SMF-28® ULL is the best option.

  • vgranullaque October 30, 2012 at 4:38 pm

    Thank you for a very interesting webinar.
    Merrion, when do you think is the right time to start deploying low loss fiber?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:42 pm

      The sooner you start deploying low attenuation fibers even just in small upgrade or repair sections of the network the earlier that you start to lower the average attenuation of your network and benefit from the cost and performance advantages afforded by a network with a low fiber attenuation.

  • Art Garcia October 30, 2012 at 4:09 pm

    can we make the presentation screen larger?

    • Sophie Burdajewicz
      Sophie Burdajewicz October 30, 2012 at 4:16 pm

      Hello you can make the screen bigger by clicking on the square icon with the cross in it at the bottom right hand corner of the video screen (where the controls are)

  • Jim Dev October 30, 2012 at 3:50 pm

    What is the price premium for ultra-low loss fibers relative to standard fibers?

    • Merrion Edwards
      Merrion Edwards October 30, 2012 at 4:41 pm

      Fiber typically represents a small fraction (single digit %) of the overall network cost and yet is the foundation of the whole network and thus can determine the cost of the rest of the components. So choosing the right fiber for the right applications is critical. Yes, ultra low loss fibers come at a premium relative to standard fibers but given that the cost of the fiber in the network is small while the cost-saving impact of ultra-low loss fibers is large, as a result the fiber premium is immediately and usually overwhelmingly offset by the savings it enables in terms of CapEx (amplifiers and regenerators) and OpEx (lower energy and maintenance costs) leaving the operator with significant net gains in terms of CapEx and lifetime OpEx