The Newsletter Of The Fiber Optic Association. A Most Interesting Installation In Greenland. The cable is being installed aerially, because, as you can see, the terrain is not very good for underground installations and the cost would be astronomical. Because of the difficult environmental conditions with lots of ice in the winter, the choice of cable was OPGW, able to withstand the winds, ice, and just about anything else from the local weather. While this run includes no repeaters, there will be requirements for power in the future so a power cable is being run underneath the OPGW. The fiber is super low loss G. B per km. Here is Ian in the class. Two students prep the OPGW cable. Two students preparing the entrance of the splice closure. Preparing the closure for splicing. Thanks to FOA instructor Ian Gordon Fudge of Fiber. DK for this story and photos. Statistical Techniques | Statistical Mechanics.
![]() ![]() Miles (6. 50. 0 km) Of Fiber Connects New Atlanta Stadium. Atlanta's new Mercedes Benz Stadium is just opening but it's ready for high tech fans. Here are some impressive numbers: 4. The original plan was for 1. DAS/Wi. Fi access points but the total has been upped to 1. Connections to two 4. G trunks should allow everybody to stream video simultaneously. Everything else is on fiber too - from ticket turnstiles to concession stand cash registers to the 2. IBM was he systems integrator and used Corning One DAS/Wi. Fi equipment. Read more on Mobile. Sports. Report. And this article from Sports. Techie has some great photos. Welcome To 5 New FOA Schools. The FOA network of training organizations offering CFOT (and more) certifications continues to expand. This month we welcome five new schools including Tellabs Training Services, Rally Training Services and the Springfield, MA JATC. Tellabs Training Services, Dallas TX school #3. Rally Training Services, Genola, UT, USA #3. Mundo Interconnect LLC, Mansfield, MA USA #3. Ecuador) Springfield Electrical JATC, Springfield MA school #6. Fiber Optic Training Toronto, Toronto, ON, Canada #3. Is Cable The Current Big Development Focus? It seems like fiber optic component development goes in waves. A problem arises, some solutions are offered, the best ones get developed, and of course copied, until the idea becomes widely accepted. Exceptions occur, of course, when enterprising developers tie up the ideas in patents, but for the most part good ideas become industry accepted de facto standards. A recent example is splice- on connectors. We do not know who started offering the fusion splice- on connector (SOC) but we've found references back to around 2. The wide acceptance of them is much more recent, started in part by the success of the massive volumes being used in singlemode fiber cable plants for mega data centers. Following that was the development of low- cost portable fusion splicers aimed at volume installations like FTTH. Now everybody seems to offer SOCs and they appear to be well on their way to becoming the most popular means of termination. Cable has been the subject of development since the beginning of fiber optics, but mainly in terms of adapting designs to particular applications. Underground in conduit led to direct burial cable which required armor to prevent crushing or rodent penetration. Aerial cables were developed to allow high tension after installation, making ADSS - all dielectric self- supporting cable - a very popular option for OSP installations. Specialty cables like submarine cables or OPGW - optical power ground wire - are small volume but have had a big impact on the expansion of the world's communications systems. High Fiber Count Small Cables Two years ago at the OFC conference, we saw a Prysmian cable that had an immense number of fibers in a small cable - 1. High fiber count cables, over 3. This cable was very small in comparison because it used two new developments, bend- insensitive fiber that allowed crowding fibers close together without affecting performance and the smaller buffer coating (~2. BI fiber made possible. Standard buffer tubes could now handle double the number of fibers (2. The colored tubes you see are buffer tubes, not fibers by the way. This particular Prysmian cable was intended for data center applications where there are massive numbers of links (1. This past Spring, a network entrepreneur sent me a photo of this cable shot with his phone at a trade show. That's a Corning Mini. Xtend cable with 2. The size of the cable alone is a major accomplishment, but the installation method for which it's designed is even more important. It's designed to be blown into microducts as shown in this Corning graphic. Here are some typical duct configurations from Corning's datasheet. Blowing cable is different from blowing fibers, a technique proposed decades ago for FTTH but dealing with bare fibers seemed to make some people uneasy and the costs exceed the benefits (being able to blow our fibers and blow in new ones). Blowing cable into microducts is very popular in many cities around the world where density is great and space limited. Here is FOA Instructor Joe Botha's class learning the techinques of blowing cable at a recent Triple Play Fiber Optics school class in South Africa. Technically you don't really "blow" fiber optic micro cable into the duct, you float it on air to reduce friction and use the air flow to help you push the cable through the duct. Having a small cable with light weight is important when blowing cable. Corning's website on Mini. Xtend cables also points out an important possibility with microducts and blown cable - adding cables to current conduits and ducts. Here is how you can add cables to common 1. Adding cables into ducts is a great idea. To date, the most obvious solution has been the Max. Cell fabric ducts that can be pulled into existing conduit and ducts (see their new versions below) This method is another possibility that is perhaps more conventional than the fabric ducts but installation costs should be compared. Another advantage of the microducts is they are small enough to install in cities by microtrenching. Microtrenching saws a narrow and shallow groove in a highway, drops in a microduct and fills the groove. It's quick and easy and much cheaper than trenching. There are many different designs for microducts, so you must be able to find one that meets your needs. Here is a photo sent to us by the same person who sent the photo of the microcable with the dime above. These are sample microducts sent to him from Emtelle, a manufacturer of microducts. Upgrades are a problem faced by many organizations today. Metropolitan networks are being investigated to develop plans to support hundreds or thousands of small cells, smart street lights and traffic lights, video cameras and other sensors and communications links projected to fill smart cities in the near future. If this method offers a simple, low cost solution, it's going to be adopted by a large number of users. Rollable Ribbon" Cable. Another cabling development seems to be coming into its own - a modification to ribbon cable that removes the problem of its lack of flexibility but retains its advantage of management and mass splicing. This is called "rollable ribbon" by its developer NTT and here is their drawing that illustrates it from the FOA Newsletter back in January 2. NTTMost recently, OFS introduced their version of a high- density cable called "Accu. Tube+ Rollable Ribbon." OFSNote the large number of fibers in each buffer tube. These cables can be handled just like regular loose tube cable but the fibers can be spliced as ribbons.(And note the dry water- blocking fabric in the cable - that's got to be one of the most useful cable developments ever!)Now if only we had low- cost high- quality ribbon splicers! Max. Cell Edge Offers Reduced Pulling Tension, Classic Orange Color. We've talked about Max. Cell fabric innerduct in the FOA Newsletter before, noting their unique design that maximizes conduit space compared to normal plastic innerduct. We have also described their process to remove old innerduct and replace it with their fabric innerduct. FOA Newsletter, September 2. Max. Cell Edge has a new patented fabric design, resulting in up to 2. Just like its predecessors, the Edge product will solve cabling issues in smaller ducts and overlay applications with the added benefit of easier identification in a new Telco orange color. With the patented 1. Vis™ Glide rope in each cell, installers will see decreased pulling tension versus traditional tape.Another Sign That Copper's Fading. Free Online 3D Graph Maker .
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