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Karchagani,Ramin Mokhtari

  Cables, UTP and Optical
Ok guys so here it goes:  An optical fiber (any type of plastic or glass that is responsible for transporting data) is an optical cable which is normally covered with a layer known as the jacket layer-mostly made out of plastic. The jacket layer protects and gives more strength to the fiber cable. The fiber in nature is very thin and usually transparent, made of glass or plastic. These very thin layers of glass or plastic are able to send messages using light waves. Fiber cables are a fairly new technology and have a few advantages over the old traditional metal communication cables. One of the advantages is that fiber optic is capable of transmitting more data at a given point in time than the metal cables. Another advantage is that obviously fiber optic cables are much lighter since we are talking plastic/glass versus metal here, and ofcourse more thin. Fiber optics also have a down side to them, here is a few disadvantages: They are more expensive than metal cables, they are definitely more fragile and difficult to splice. We have been talking about LAN in our class, and it is important for you to know that fiber optic is a popular technology for local-area networks. There are many types of optic cables for different purposes out there, one can determine which type is appropriate based on the type of usage.

Fiber Optical Cable

In simple words a utp cable is made of a whole bunch of copper cables bunddled together and twisted/paired with one another. Every individual cable has a jacket and an insulation but does not have an additional layer to protect/shield it. Utp cables are widely used for telecommunication and computer networks all around the world coming is different types such as Cat6, Cat3, and Cat5e. The higher number of the category simply indicates more twist per foot, and that translates into better protection and strenght. Forexample, Cat6 is a newer development of Cat5e with better features such as, a higher speend and interference blockage capabilities. Utp is known as the most popular cable around the globe because it is very cost-effective and simple to use. However it is important to mention that the unshieldedness of utp can be dangerous in certain situations and create problem. If utp cables are used or installed where there are large electrical equipment, then there exists the danger of melting or interference.Utp cables were first used by Alexander Graham Bell in his telephone system inventions back in 1881 and have been modified and used in different ways since then.


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