Fiber optics
The major Network system new support fiber-optic cabling because
fiber-optic cables transmit data as light pulses through glass cables
and the significant advantage of this type of cabling over others, is
that it provide the fastest transmission speed and more reliable. Fiber
optic is thin on flexible.
Fiber optic also called optical fiber is usually found where long
cable length are required, where extremely high speed is desire. It is
much less weak to these environmental difficulties because it uses light
impulses along a glass or plastic wear or fiber, rather than electrical
signals through on electrically conductive medium light signal
protection from environmental interface. The light produce fro the end
of a fiber optic device as the light could damage your eyes as
permanently.
Fiber optic is usually refereed to simply as fiber. Each segment of
fiver optic cable must be connected at each end with a special fiber
optic connector.
In other words we can say fiber-optic networks can be used to obtain
high transmission speeds. Fiber-optic cable transmits light rather than
electrical signals. Light is reflected by the sides of the fiver. The
transmission speed of the signals is equal to the speed of light in the
material used for the cable, which is not huge speed improvement over
transmitting electrical signals. However, the advantage is that
fiver-optic signals are not sensitive to electromagnetic fields. We can
therefore achieve maximum transmission speeds using a conductive fiber
that is nothing more than a simple, uninsulated piece of plastic.
Moreover, its easy to multi-fiber cables, because there is no
interference between one fiber optic conductor and another. The data
transfer speed on such networks can reach 150 MBPS, which is 15 times
the speed of the today’s standard networks. At these speeds it’s
possible to transmit sound and even animated image in real time.
Twisted Pair Cable:
Twisted
pair cable is common type of network cable, because of low cost.
Physically, in its simplest form twisted pair cable consists of a pair
of insulated copper wires twisted around each other.
Twisted
pair cable is considerably less expensive than the other types of
cabling. Large network installations the lower price of cable offsets
the cost of a hub and makes twisted pair low cost network solution.
On
this category include various type of twisted pair, these are:
Unshielded twisted pair (UTP), Shielded twisted pair (STP)
10BaseT,100BaseT. All of them UIP cable prefer Hub based network
solution.
Unshielded Twisted-Pair:
UTP
is more flat to interference that Type 1 cable, which is shielded. Its
installation should be left to specialists if good results are to be
achieved. However, its low cost allows buildings to be flood wiered, so
network access point can be provided anywhere there is likely to be a
desk. Or any place someone may carry or want to use a portable laptop
machine! Given the frequency with which people move offices, the
increasing availability of portable computers, and the cost of changing
networks that use traditional cabling methods, this is a big selling
point. UTP will surly become more popular in the future.
Shield Twisted Pair
This
wires are generally thicker than UTP and are shielded from any
electrical interference by protective coat of insulated material.
