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Shedding Light on Dark Fiber

13 Mar

Dark Fiber

What is Dark Fiber?

Dark Fiber gives your company’s network a dedicated fiber optic connection; this connection offers virtually unlimited bandwidth as it is solely based upon the equipment you place on the ends. Dense wavelength-division multiplexing (DWDM), an optical technique that involves splitting a single optical fiber into multiple wavelengths, further supports this limitless bandwidth capacity. Currently, DWDM systems have a capacity of 8 terabits and growing!

Frequently, Dark Fiber is sold on a per pair or single-strand basis dependent upon what your gear requires. Typically, the purchase of the network occurs via a long term IRU (Indefeasible Rights of Use) agreement. Traditionally, this lease agreement was for 10 or 20-year terms, however, in recent years companies have begun purchasing on much shorter lease terms.

Benefits of Dark Fiber:

Any Service, Any Protocol, Any Bandwidth:  Dark Fiber is traffic agnostic to the protocols that you allow to traverse the network. It’s yours to use. You control your bandwidth from 1 Mbps to speeds over 100Gbps!  However, do be mindful of some distance limitations that your protocol may have.

Reliability:  A premiere and optimally designed and engineered Dark Fiber network will include redundant paths for diversity. For maximum diversity, multiple carrier networks may be utilized. Always ask for route maps to ensure carrier path diversity and if you see paths that don’t make sense…ask questions.

Scalability:  The only limiting factor is the equipment you install—Dark Fiber is virtually unlimited in its capabilities. You can easily scale you network to your needs from 1Gbps to 100Gbps and beyond, simply by switching out your equipment.

Security:  Because you place the equipment on each termination point of your Dark Fiber network, you have full control on how you implement your security. No public routers, switches or COs ensures your data remains in the private sector.

Flexibility:  The only factor is determining the protocols that traverse the network and at what volume the equipment installed on each end can support. If you lease your own private fiber connection, you control everything.

Purchase Options and Fixed Cost:  Dark Fiber leasing and purchase options provide flexibility for the financial planning aspects of your organization. And, because bandwidth is limitless there is no concern for hiking costs of additional bandwidth.

A Dark Fiber network provides a host of premier benefits to the end user. However, when deciding on a network solution it is important to keep in mind the management and support of that network. Unlike a lit solution, Dark Fiber requires in-house maintenance and upkeep of the network. To learn more about the differences between a lit and dark fiber solution, see our previous post.

Ultimately, when choosing a network solution, it is best to discuss your options with a service provider. Each organization will have different pain points and requirements that may or may not fit the scope of Dark Fiber connectivity. But certainly, if you are looking for limitless flexibility and unrivalled bandwidth, Dark Fiber can show you the light.



Optical Speed 2.0

26 Nov


Researchers from the University of Southampton are working in a project with the aim of increase dramatically the bandwidth of optical fibre. The project is called MODE-GAP that stands for Multi-mode capacity enhancement with PBG fibre. The results of this project would boost the capacity of nowadays networks by developing and testing advanced fibre technologies.

Nowadays the demand of bandwidth is continuously growing due to services like high quality video streaming or interactive gaming. Due to this situation and the limited performance of current optical fibre networks it is predictable that in a near future an evolution in the field will be needed.

Current optical networks are based in SMF (Single-Mode Fibre) and the new technology in development in MODE-GAP project will use FMF (Few-Mode Fibre) that will allow to transmit information in several light pathways.

Ian Giles, coordinator of MODE-GAP states: “When you look at the problem of SMF capacity limits, the simple solution may seem to be to increase the number of fibres in the network, but when you do this you also get increased cost and increased energy usage”

Basically what FMF does is using a form of ‘spatial-division multiplexing’, utilising the spatial dimension to increase transmission capacity. The team is also considering using a new wavelength range as another way of increasing capacity.

From Giles point of view, the development of this technology and its potential increase of capacity is a global solution that will benefit everyone using the network in the future.

It can be this technology or maybe another one, but seems clear that in the near future new developments will boost network capacity.

To more information visit MODE-GAP website or article.


Fiber to the antenna – wireless challenges

10 Jul

Today’s wireless operators face ongoing challenges to supply the coverage and capacity that their customers want, especially for data. This means deployment of 3G and 4G solutions, often in crowded tower and rooftop environments. Fiber-fed remote radio technology offers potential savings through both capital expenditure (CapEx) and operating expenses (OpEx) reductions compared to traditional coaxial cable-based solutions. Corning Cable Systems Solutions for Wireless Networks leverages field-proven, standards-based solutions to make fiber-to-the-antenna (FTTA) deployment a fast plug-and-play operation that saves time and money

Further reading download document at source.


Japanese youth dumping fiber lines for LTE

21 Nov


NTT, a Japanese wireline operator, is dropping the price on its fiber to the home product to attract new subscribers as Japan’s youth choose wireless LTE over fiber to the home service. NTT cut its monthly broadband rates by 34 percent to 3,600 yen (USD 43.74) in an effort to retain customers who don’t want to pay two communications bills.

From the a story on Australian tech news site Delimiter on the topic:

Sources at NTT East and NTT West are unequivocal in their views that the biggest single reason for the slowdown in FTTH subscriber growth is the fact that many young subscribers now prefer to have their own ‘personalised’ LTE broadband services rather than paying for a household-based FTTH service – in addition to which they would be paying for a Smartphone LTE data plan anyway.

And while popular Japanese carrier NTT DoCoMo (NTT is not allowed to…

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With 2 days left, Google Fiber has signed up 21,000

9 Sep


Updated: Google’s (s goog) plan to get people to sign up in advance for its gigabit fiber-to-the-home project has managed to score the search giant a whopping 21,000 people who paid $10 to pre-register for the fiber service. That’s roughly 10 percent of the 161,600 homes in Google’s 202 so-called fiberhoods (Google says there’s an average of 800 people per fiberhood) — and a fairly significant level of commitment to the product.

But will it be enough to be profitable? Dave Burstein, a telecoms reporter and analyst, estimates that it would need a take rate of between 20 and 30 percent to be profitable.

There are still two days left for residents to sign up for the service — the deadline is midnight on Sunday, and Google will then determine which areas get fiber first, based in part on the number and density of signups. I made my count…

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Gigaclear fibres up rural Oxfordshire

9 Sep


Residents of the well-to-do village of Appleton, about five miles outside Oxford, will from next week start enjoying broadband speeds at close to 1Gbps supplied by Gigaclear, a fibre network start-up that last year fibred up the Rutland village of Hambleton.

Despite its proximity to Oxford, Appleton has turned to Gigaclear rather than wait for BT or the BDUK process to deliver next generation broadband. Buyer remorse was clearly absent among the visitors to the open day Gigaclear held in the village hall yesterday. Those from neighbouring villages, who dropped in to see what the fuss was about, seemed equally impressed.

Gigaclear CEO Matthew Hare said it is company policy to avoid BT infrastructure. This is because BT’s terms and conditions contain a 90-day cancellation clause. “You can’t operate a (network) business with that hanging over your head,” Hare says.

He welcomed BT Retail if it wanted to sell its…

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