Glass FRP and Steel wires are commonly used central strength members in fiber optic cables. Central strength members are the elements in a fiber optic cable that are used to provide the required tensile strength during installation.
Fiber optics is relatively a new technology but it has a great influence in every walk of our life today. Our life today is so mingled with communication devices that they have become an inevitable part of our personal life, just like another organ in our body. A smartphone especially has become an extended organ of our brain. The communication networks to support such developments were possible with the advancement in fiber optics.
Installation of a fiber optic communication system is complicated and it is not simple as plugging a cord into an outlet. For a professional telecommunication engineer, the installation is not extremely difficult. If the components and their functions are known and identified, then the installation process would be easier. For this purpose, installation staff should know the major system components that are required in all fiber optic communication systems.
Dispersion limits the transmission distance in optical communications. In simple terms, the broadening of the pulse as it travels along the length of an optical fiber is called dispersion. In fiber-optic measurements, dispersion is often called Chromatic dispersion or short CD. Chromatic Dispersion is variation in the speed of propagation of a light signal with wavelength. Currently installed fiber-optic network spans are limited to around 80 to 100 kilometers that are penalized by dispersion.
ITU-T G.654 fiber has a zero dispersion at about 1300 nm but has lower attenuation at 1550nm. Most importantly, the cut-off is shifted at around 1550nm wavelength region.
In most of the cases where extra mechanical strength is required, a corrugated steel tape armoring can solve the purpose. Corrugated steel tape armor protects the inside fibers from the possible attacks by rodents and termites.
A cable design engineer, after reading the customer specification decides the construction details of an optical fiber cable. One of the important considerations he/she needs…
Though there are different solutions to achieve termite resistant, use of Bifenthrin as an active ingredient in the additive is common due to safety factors. Bifenthrin is an insecticide in the pyrethroid family. Pyrethroids are manmade versions of pyrethrins, which come from chrysanthemum flowers. Bifenthrin is used on various agricultural crops and in homes. Bifenthrin was first registered for use by the United States Environmental Protection Agency (U.S. EPA).
Fiber optic cables manufactured in a production unit need to undergo several mechanical tests to ensure their suitability to use in outdoor environment. While some tests are intended to assure the capability to use in outdoor environment, there are some tests that assure their suitability with the installation machines used for deployment. Sheave test is one of such tests. Sheave test is a kind of mechanical test which tests the strength of cable and its sheath to withstand the repeated movements through the sheaves.