Optical Fiber Coloring Machine – Blog Posts to Muse On.

Recently i watched my coworker disassembling a computer only using one tool. Was it the best tool for the job? Yes and no. It was the tool he had… it worked, however, there is definitely more than one tool on the market that could are making the job easier! This situation is unquestionably one which many fiber optic installers know all too well. As a gentle reminder, what percentage of you have used your Splicer’s Tool Kit (cable knife/scissors) to remove jacketing or even slit a buffer tube and after that use the scissors to hack away at the Kevlar? Did you nick the glass? Did you accidentally cut through the glass and have to start over?

Correctly splicing and terminating optical fiber proof-testing machine requires special tools and techniques. Training is essential and there are numerous excellent causes of training available. Tend not to mix your electrical tools with your fiber tools. Use the right tool to do the job! Being familiar with fiber work will end up increasingly necessary as the importance of data transmission speeds, fiber for the home and fiber to the premise deployments continue to increase.

Many factors set fiber installations besides traditional electrical projects. Fiber optic glass is very fragile; it’s nominal outside diameter is 125um. The least scratch, mark or even speck of dirt will change the transmission of light, degrading the signal. Safety is important because you are working with glass that can sliver in your skin without being seen from the eye. Transmission grade lasers are very dangerous, and require that protective eyewear is essential. This industry has primarily been coping with voice and data grade circuits that may tolerate some interruption or decrease of signal. The person speaking would repeat themselves, or the data would retransmit. Today we are dealing with IPTV signals and customers who can not tolerate pixelization, or momentary locking from the picture. Each of the situations mentioned are cause of the client to find another carrier. Each situation could have been avoided if proper attention was presented to the methods used when preparing, installing, and looking after fiber optic cables.

Having said that, why don’t we review basic fiber preparation? Jacket Strippers are utilized to take away the 1.6 – 3.0mm PVC outer jacket on simplex and duplex fiber cables. Serrated Kevlar Cutters will cut and trim the kevlar strength member directly under the jacket and Buffer Strippers will take away the acrylate (buffer) coating from your bare glass. A protective plastic coating is applied for the FTTH cable production line right after the drawing process, but before spooling. The most frequent coating is a UV-cured acrylate, which can be applied by two layers, resulting in a nominal outside diameter of 250um for your coated fiber. The coating is extremely engineered, providing protection against physical damage caused by environmental elements, including temperature and humidity extremes, being exposed to chemicals, point of stress… etc. while also minimizing optical loss. Without one, the manufacturer would not be able to spool the fiber without having to break it. The 250um-coated fiber will be the building block for a lot of common fiber optic cable constructions. It is usually used as it is, especially when additional mechanical or environmental protection is not needed, such as on the inside of optical devices or splice closures. For further physical protection and easy handling, a secondary coating of polyvinyl chloride (PVC) or Hytrel (a thermoplastic elastomer which has desirable characteristics to use as being a secondary buffer) is extruded over the 250um-coated fiber, increasing the outside diameter as much as 900um. This type of construction is referred to as ‘tight buffered fiber’. Tight Buffered may be single or multi fiber and they are noticed in Premise Networks and indoor applications. Multi-fiber, tight-buffered cables often are used for intra-building, risers, general building and plenum applications.

‘Loose tube fiber’ usually includes a bundle of fibers enclosed in a thermoplastic tube known as the buffer tube, that has an inner diameter that is certainly slightly larger than the diameter from the fiber. Loose tube fiber includes a space for that fibers to expand. In some climate conditions, a fiber may expand and after that shrink over and over again or it could be exposed to water. Fiber Cables will sometimes have ‘gel’ within this cavity (or space) as well as others which can be labeled ‘dry block’. You will find many loose tube fibers in Outside Plant Environments. The modular form of loose-tube cables typically holds approximately 12 fibers per buffer tube using a maximum per cable fiber count of more than 200 fibers. Loose-tube cables may be all-dielectric or optionally armored. The armoring is utilized to safeguard the cable from rodents such as squirrels or beavers, or from protruding rocks in a buried environment. The modular buffer-tube design also permits easy drop-away from groups of fibers at intermediate points, without interfering with other protected buffer tubes being routed to other locations. The loose-tube design will help with the identification and administration of fibers inside the system. When protective gel exists, a gel-cleaner including D-Gel will likely be needed. Each fiber will be cleaned with all the gel cleaner and 99% alcohol. Clean room wipers (Kim Wipes) are a great option to use with the cleaning agent. The fibers within a loose tube gel filled cable usually have a 250um coating so that they are more fragile than a tight-buffered fiber. Standard industry color-coding is additionally utilized to identify the buffers as well as the fibers in the buffers.

A ‘Rotary Tool’ or ‘Cable Slitter’ may be used to slit a ring around and thru the outer jacketing of ‘loose tube fiber’. As soon as you expose the durable inner buffer tube, use a ‘Universal Fiber Access Tool’ which is perfect for single central buffer tube entry. Used on the same principle because the Mid Span Access Tool, (which allows accessibility multicolored buffer coated tight buffered fibers) dual blades will slit the tube lengthwise, exposing the buffer coated fibers. Fiber handling tools such as a spatula or a pick may help the installer to access the fiber in need of testing or repair. After the damaged fiber is exposed a hand- stripping tool will be utilized to remove the 250um coating to be able to assist the bare fiber. The next thing is going to be washing the fiber end and preparing it to be cleaved. A great cleave is among the most essential factors of making a low loss on the splice or perhaps a termination. A Fiber Optic Cleaver is a multipurpose tool that measures distance from your end from the buffer coating to the stage where it will likely be joined plus it precisely cuts the glass. Remember to use a fiber trash-can for that scraps of glass cleaved off the fiber cable.

When performing fusion splicing you will need a Fusion Splicer, fusion splice protection sleeves, and isopropyl alcohol and stripping tools. If you are using a mechanical splice, you will need stripping tools, mechanical splices, isopropyl alcohol and a mechanical splice assembly tool. When hand terminating Secondary coating line you will need 99% isopropyl alcohol, epoxy/adhesive, a syringe and needle, polishing (lapping) film, a polishing pad, a polishing puck, a crimp tool, stripping tools, fiber optic connectors ( or splice on connectors) and piano wire.

When a termination is done you have to inspect the conclusion face from the connector having a Fiber Optic Inspection Microscope. Making sure that light is to get through either the splice or yphlby connection, a Visual Fault Locator can be utilized. This device will shoot a visible laser along the fiber cable so that you can tell that there are no breaks or faulty splices. If the laser light stops on the fiber somewhere, there is most probably a rest within the glass when this occurs. When there is more than a dull light showing on the connector point, the termination had not been successful. The light also needs to move through the fusion splice, if it fails to, stop and re- splice or re-terminate.

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