Recently i watched my coworker disassembling a pc only using one tool. Was it the right tool for the job? Yes and no. It was the tool he had… it worked, however, there exists definitely more than one tool out there that could have made the task easier! This example is certainly one that many fiber optic installers know all too well. As being a gentle reminder, what number of you might have used your Splicer’s Tool Kit (cable knife/scissors) to eliminate jacketing or even slit a buffer tube and then utilize 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 methods. Training is very important and there are numerous excellent types of training available. Tend not to mix your electrical tools along with your fiber tools. Use the right tool to do the job! Being experienced in fiber work can become increasingly necessary as the significance of data transmission speeds, fiber towards the home and fiber towards the premise deployments continue to increase.
Many factors set fiber installations aside from traditional electrical projects. Fiber optic glass is very fragile; it’s nominal outside diameter is 125um. The slightest scratch, mark or even speck of dirt will impact the transmission of light, degrading the signal. Safety factors important simply because you will work with glass that will sliver in your skin without being seen by the eye.
Transmission grade lasers are incredibly dangerous, and require that protective eyewear is important. This industry has primarily been working with voice and data grade circuits that could tolerate some interruption or decrease of signal. The individual speaking would repeat themselves, or perhaps the data would retransmit. Today we have been working with IPTV signals and customers who can not tolerate pixelization, or momentary locking in the picture. Each of the situations mentioned are cause for the client to look for another carrier. Each situation might have been avoided if proper attention was presented to the strategies used while preparing, installing, and maintaining SZ stranding line.
Having said that, why don’t we review basic fiber preparation? Jacket Strippers are utilized to eliminate 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 to the bare fiber right after the drawing process, but before spooling. The most typical coating is actually a UV-cured acrylate, that is applied in two layers, resulting in a nominal outside diameter of 250um for that coated fiber. The coating is highly engineered, providing protection against physical damage brought on by environmental elements, like temperature and humidity extremes, being exposed to chemicals, reason for stress… etc. while also minimizing optical loss.
Without one, the producer would be unable to spool the fiber without having to break it. The 250um-coated fiber will be the foundation for most common fiber optic cable constructions. It is usually used as it is, specially when additional mechanical or environmental protection is not required, like within optical devices or splice closures. For additional physical protection and easy handling, a secondary coating of polyvinyl chloride (PVC) or Hytrel (a thermoplastic elastomer that has desirable characteristics to be used as being a secondary buffer) is extruded within the 250um-coated fiber, improving the outside diameter as much as 900um. This kind of construction is referred to as ‘tight buffered fiber’. Tight Buffered could be single or multi fiber and are observed in Premise Networks and indoor applications. Multi-fiber, tight-buffered cables often can be used for intra-building, risers, general building and plenum applications.
A ‘Rotary Tool’ or ‘Cable Slitter’ could be used to slit a ring around and through the outer jacketing of ‘loose tube fiber’. Once you expose the durable inner buffer tube, you can use a ‘Universal Fiber Access Tool’ which is designed for single central buffer tube entry. Used on the same principle as the Mid Span Access Tool, (that allows access to the multicolored buffer coated tight buffered fibers) dual blades will slit the tube lengthwise, exposing the buffer coated fibers. Fiber handling tools for instance a spatula or a lqzgij may help the installer to gain access to the fiber needing testing or repair.
After the damaged fiber is exposed a hand- stripping tool will be used to take away the 250um coating to be able to work together with the bare fiber. The next phase is going to be cleansing the Sheathing line and preparing it to be cleaved. A good cleave is probably the most essential factors of creating a low loss over a splice or perhaps a termination. A Fiber Optic Cleaver is really a multipurpose tool that measures distance from the end in the buffer coating to the level where it will be joined and it precisely cuts the glass. Remember to employ a fiber trash-can for the scraps of glass cleaved off of the fiber cable.