I recently watched my coworker disassembling a computer 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 several tool out there that would have made the task easier! This situation is definitely one that many fiber optic installers know all too well. As being a gentle reminder, what number of you have used your Splicer’s Tool Kit (cable knife/scissors) to eliminate jacketing or even slit a buffer tube and then 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 coloring machine requires special tools and techniques. Training is important and there are many excellent types of training available. Do not mix your electrical tools with your fiber tools. Make use of the right tool to do the job! Being familiar with fiber work can become increasingly necessary as the importance of data transmission speeds, fiber for the home and fiber for the premise deployments carry on and increase.
Many factors set fiber installations apart from traditional electrical projects. Fiber optic glass is very fragile; it’s nominal outside diameter is 125um. The slightest scratch, mark as well as speck of dirt will affect the transmission of light, degrading the signal. Safety factors important since you will work with glass that can sliver in your skin without getting seen by the eye.
Transmission grade lasers are incredibly dangerous, and require that protective eyewear is important. This industry has primarily been coping with voice and data grade circuits that could tolerate some interruption or slow down of signal. Anyone speaking would repeat themselves, or even the data would retransmit. Today we are coping with IPTV signals and customers who can not tolerate pixelization, or momentary locking from the picture. All the situations mentioned are cause for the customer to find another carrier. Each situation might have been avoided if proper attention was presented to the methods used in planning, installing, and maintaining optical fiber ribbon machine.
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 eliminate the acrylate (buffer) coating through the bare glass. A protective plastic coating is used towards the bare fiber right after the drawing process, but just before spooling. The most frequent coating is actually a UV-cured acrylate, which can be applied by two layers, resulting in a nominal outside diameter of 250um for that coated fiber. The coating is very engineered, providing protection against physical damage brought on by environmental elements, such as temperature and humidity extremes, exposure to chemicals, point of stress… etc. as well as minimizing optical loss.
Without one, the manufacturer would struggle 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 often used as it is, specially when additional mechanical or environmental protection is not required, such as inside of optical devices or splice closures. For additional physical protection and ease of handling, a secondary coating of polyvinyl chloride (PVC) or Hytrel (a thermoplastic elastomer that has desirable characteristics for use as being a secondary buffer) is extruded within the 250um-coated fiber, increasing the outside diameter approximately 900um. This kind of construction is known as ‘tight buffered fiber’. Tight Buffered might be single or multi fiber and therefore are noticed in Premise Networks and indoor applications. Multi-fiber, tight-buffered cables often can be used as intra-building, risers, general building and plenum applications.
A ‘Rotary Tool’ or ‘Cable Slitter’ may be used to slit a ring around and thru 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, (which 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 such as a spatula or even a lqzgij will 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 employed to eliminate the 250um coating in order to work with the bare fiber. The next step is going to be cleaning the secondary coating line and preparing so that it is cleaved. A good cleave is one of the most significant factors of making a low loss on a splice or even a termination. A Fiber Optic Cleaver is really a multipurpose tool that measures distance through the end in the buffer coating to the stage where it will probably be joined and it precisely cuts the glass. Always remember to utilize a fiber trash-can for your scraps of glass cleaved from the fiber cable.