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  1. A Light Lunch: CableLabs Eyes Coherent Optics

    Coherent optics may be the solution that provides much needed relief in the bandwidth department. CableLabs announced last week that it has adapted the technology, which has been used in long-haul fiber networks for quite some time, for use in short-haul access  networks . The R&D consortium has demonstrated 2,048 Gbps using eight wavelengths of 256 Gbps each. "Future demand is not based on pure capacity, but the architectures that are coming up in the cable space," said Alberto Campos, CableLabs distinguished technologist. "As we looked at different alternatives, coherent technology came to mind because (it offers) high capacity on a per optical, per wavelength, perspective. It allows you to put many optical carriers in the same fiber." Specifically, with coherent technology, there are two dimensions of turning light, using amplitude and phase, as well as two polarizations. This allows more wavelengths in the spectrum compared to other technologies and, therefore, more capacity in a fiber. In the long-haul environment, distances of more than 3000 km come into play. Fiber of that length needs a lot of compensation for distortion and noise. The result is a complex, expensive implementation. The access network, however, involves tens of kilometers rather than thousands, which means that the amount of compensation necessary is significantly reduced. The result is a simpler, lower cost implementation, Campos said. "There (also) are economies of scale in the access portion of the network …. You need more optical links (than in backbone) …. One more driver to lower cost is in the access network, there is the luxury of implementing robust technology, (which) facilitates interoperability," Campos said, noting that simplicity equals interoperability, while complexity hinders it. The process will now transition to R&D and specification development. Campos said he anticipates that a working group will be launched in the May/June timeframe. The dispersion and linear distortion in long-haul can be corrected with signal processing, but covering 3000 km means a "significant" amount of processing and a chip large enough to accommodate it, Campos said. "When you are (only) dealing with 30-40 km, the amount of dispersion compensation is negligible … so a smaller chip is needed." While CableLabs demonstrated a significant increase in capacity using coherent technology, Campos said the industry is still at the early stages. "We are future-proofing the network because of the amount of capacity that is available." He added that the coherent technology is not specifically for cable. It can be used in an access network for telcos and cellular companies as well, for example. "It is an enabler of transport." Further details are available in a CableLabs blog at http://www.cablelabs.com/future-proofing-cables-optical-access-network-coherent-story .

    Online Articles

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    Tue, 14 Feb 2017

  2. Broadpeak Taking Streaming Tech to MWC

    At Mobile World Congress 2017 in Barcelona, Broadpeak will demonstrate technologies for streaming video over managed networks and OTT ...

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    Thu, 9 Feb 2017

  3. Cablevision Argentina Upgrades Backbone with Ciena

    Cablevisión Argentina is upgrading its network to 200G with Ciena's (NYSE:CIEN) converged packet optical solutions. The upgrade is intended ...

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    Wed, 18 Jan 2017

  4. VITEC Buys Stake in OTT/IPTV Software Company Anevia

    VITEC has decided to complement its existing work in advanced video encoding and streaming products by buying an 8% stake in Anevia, a provider of OTT and IPTV software.

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    Wed, 11 Jan 2017

  1. Comcast Courting OTT Providers

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    Fri, 6 Jan 2017

  2. Cisco Intros Video Test Lab Community

    At CES 2017 in Las Vegas, Cisco (NASDAQ:CSCO) is launching the Infinite Video Platform (IVP) Labs to allow participating customers to test ...

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    Fri, 6 Jan 2017

  3. SVA to Trial Open Caching for Streaming Video

    The Streaming Video Alliance plans to begin trials based on the recently approved Open Caching Request Routing and HTTPS Delegation ...

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    Tue, 3 Jan 2017

  4. SeaChange Video Back Office Deploying in Panama

    Panamanian video service provider Cable Onda has chosen a back office solution from SeaChange International (NASDAQ:SEAC) to support its ...

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    Mon, 12 Dec 2016

  5. Data Monetization: Make the Most of Your Most Valuable Asset

    The very devices and applications favored by subscribers today are also a goldmine of data. This information could be your company's most valuable asset — but few providers are maximizing this resource to its full benefit. Focusing on data monetization while still respecting subscriber privacy is ...

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    Wed, 7 Dec 2016

  6. Service Provider Core Router Market Up 22% in Q3

    According to the Dell'Oro Group, the service provider core router market grew 22% year-over-year in the third quarter of 2016, extending a ...

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    Wed, 7 Dec 2016

  7. Server Market Down for the First Time in 15 Quarters

    Possibly reflecting the growth of SDN, NFV and cloud technologies, a report from Dell'Oro Group indicates that the server market recorded its ...

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    Tue, 6 Dec 2016

  8. Eutelsat, Broadpeak Team on Satellite Multiscreen Video

    Broadpeak and Eutelsat Communications (NYSE Euronext Paris:ETL) are teaming up to offer video content providers a satellite-based solution ...

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    Tue, 15 Nov 2016

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Test and Measurement Trends

This webinar will take provide an overview of major trends in test and measurement for cable operator networks with a deep dive into areas of significant int...

Deploying and Maintaining DOCSIS 3.1

A growing number of operators are readying their first deployments of DOCSIS 3.1 technology. This webinar offers insights into what operators should know as ...

Date:February 16, 2017

Improving Multiscreen Services

This new collaboration between SCTE/ISBE and BTR begins with a look at how to overcome the challenges operators have discovered as they meet subscribers' req...

January 19, 2017
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