Tag Archive for DWDM

More Fiber in the D

Mergers an d acquistionsUpdated – August 1, 2017 – Lightower Fiber Networks has agreed to be acquired by Crown Castle International Corp. for approx. $7.1 billion in cash. The deal is expected to close by the end of 2017.

Update – May 01, 2015 – Fibertech Networks was bought by Lightower Fiber Networks in a $1.9 billion all-cash deal that will create a fiber powerhouse in the eastern U.S.

More Fiber in the DRochester, New York-based Fibertech Networks plans to install more than 750 route miles of new fiber optic cable in Metro Detroit. This is the company’s 30th U.S. metro network. This will add more Detroit markets to their over 12,000 route miles of fiber-only network infrastructure. The area to be served include Trenton, Canton Township, Dearborn, Southfield, Warren, Troy, and Chesterfield Township.

Fibertech NetworksThis is a major expansion for Fibertech and an important step in our development as one of the largest and fastest-growing metro fiber providers in the eastern U.S.,” said John K. Purcell, chair and CEO of Fibertech, told  BusinessWire that the move was “an economic development initiative that we believe will help foster telecom competition, and business and employment growth.

The company’s service offering encompasses both dark fiber and optical broadband. They offer their facilities to businesses that have predominately used traditional carriers and lines in the past. The company’s services include point-to-point and multi-point Ethernet services with speeds ranging from 5 Mbps to 100 Gbps. They also offer DWDM, dedicated Internet access, and collocation.

Fibertech Networks network

Other fiber markets

In addition to Detroit, Fibertech has networks working in Pittsburgh, Pa.; Indianapolis; Akron, Cincinnati, Cleveland, Columbus, Dayton, and Toledo, Ohio. Markets on the east coast include Providence, R.I.; Hartford, Bridgeport, Stamford, Danbury, New London, and New Haven, Conn.; Springfield and Worcester, Mass. They also have fiber facilities in Syracuse, Rochester, Buffalo, Binghamton, White Plains, and Albany, N.Y.; Wilmington, Del.; Montgomery County, Md.; Trenton, Newark and Atlantic City, N.J.; and Philadelphia.

Fiber optic cableThis new network expansion is a natural 2013 extension of our market footprint given our growing presence in the Midwest and, most recently, our extension into five new markets in Ohio including Toledo,” said Mr. Purcell.

Fibertech was founded in May 2000, has built metro-area fiber networks in 29 mid-size markets in the eastern United States, and is led by Court Square Capital Partners of New York City. The company owns and operates a fiber-optic network of more than 9,500 route miles, which has more than 8,100 on-net locations with nearly 2,100 cell sites with its fiber-only network infrastructure.

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For the old-timers out there, remember Link-Michigan?

Another failed broadband initiative from Lansing. Fiber networks are a key to economic development. If the State can’t do what is right for its citizens, then the private sector will.

OMG did I just turn into a republican?

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.

DT Does 512 Gbps Data Transmission

DT Does 512 Gbps Data TransmissionDeutsche Telekom set a new data transmission speed record. They set the record by pumping 512 Gigabits per second over 456 miles. DT used a single 100 GHz wavelength channel over optical fiber according to at GigaOm. The Berlin-based T-Labs OSIRIS (Optically Supported IP Router Interfaces) research project sent 512 Gbps down each channel of a production network from Berlin to Hannover and back again. The usable data rate was 400 Gbps, overhead takes up the rest.

What is DWDMSince each fiber strand can carry up to 48 wavelengths in the case of the T-Labs system. T-Labs’ new tech should mean a staggering 24.6 Tbps (terabytes per second) max throughput for each optical fiber. “When using all of the channels of an optical fiber … the new process permits a throughput of up to 24.6 Tbit/s (24,600,000,000,000 bit/s) to be attained on the maximum of 48 available channels,”  T-Labs Manager Heinrich Arnold told TechWeek Europe. GigaOm says that “a collection of 3,696 CDs could thus be transferred over a single optical fiber at the same time” using the new technique.

T-Labs says existing networks don’t need cable replacements to take advantage of the new speeds The firm achieved the new bandwidth record by using new technologies developed with Alcatel-Lucent (ALU). The new AlcaLu gear was installed in the terminal stations at either end of the fiber.

QAM 16The BBC says that much of the speed gain came through improvements to the software used for forward error correction (FEC). TechWeek Europe says DT also used other creative transmission technologies. They used two carrier frequencies, two polarization planes, 16-QAM quadrature amplitude modulation. “You can imagine it as squeezing and tilting the entire set-up around to get more capacity out,” Mr. Arnold told the BBC.

But there are still an awful lot of copper-based networks in existence, The high value of copper makes copper-based networks vulnerable to copper theft. Also, despite advances in Copper such as ADSL2+ and VDSL2 (which I wrote about here and here) fiber is a much more “future proof” material.

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Ronnie Reagan thumbs up for high speed data

Ronnie thumbs up for high-speed data

Do the screaming hot network happy dance, the usable per-channel bit-rate is 400 Gbps, 4x the maximum bit-rate in today’s 100 Gbps per channel state-of-the-art networks, which is a huge capacity boost. This is more than double the 186 Gbps record set by researchers in the US and Canada last year (Which I wrote about here). This tech will most likely be deployed by the Telco’s and Cableco’s who need to support an FTTx strategy, it’s gonna be a long time until these speeds reach most enterprises.

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Ralph Bach has been in IT long enough to know better and has blogged from his Bach Seat about IT, careers, and anything else that catches his attention since 2005. You can follow him on LinkedInFacebook, and Twitter. Email the Bach Seat here.