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Q23:What is Fiber Optics Cable?
A23:Fiber optics cable is a technology where electrical signals are converted
into optical signals, transmitted through a thin glass fiber, and re-converted
into electrical signals. It is used as transmission medium for the following
Ethernet media systems: FOIRL, 10Base-FL, 10Base-FB, 10Base-FP,100Base-FX,
1000Base-LX, and 1000Base-SX.
Fiber optics cable is constructed of three concentric layers:The "core"
is the central region of an optical fiber through which light is transmitted.The
"cladding" is the material in the middle layer. It has a lower
index of refraction than the core which serves to confine the light to
the core. An outer "protective layer", or "buffer",
serves to protect the core and cladding from damage.
We recommend a horizontally run, multimode fiber optics cable for indoor
LANs.A multimode fiber optics cable has several hundred modes,individual
parameters of light called "waveguides".A minimum of six (6)
strands per cable is recommended, while twelve (12) strands are optimal.
Cable can be PVC or riser type for non-plenum areas.Plenum areas require
a plenum rated,Communications Plenum (CMP),type cable.Fiber optic connectors
are single terminus (ST) or subscriber connector (SC) type connectors,
either epoxy or crimp type. LIU boxes are used to allow a permanent fiber
termination point. Fiber optics cable technology is the future of computer
applications and telecommunications networks. Fiber optics cable's high
capacity supports video,data and interactive services of all kinds.
Benefits Fiber optics cable is an excellent choice for horizontal station
runs to central hubs and backbones.
Fiber optics cable eliminates distance/distribution problems, which are
typical of copper cable systems.
Fiber optics cable are also immune to electromagnetic intrusions, crosstalk,radio
frequency interference, impedance mismatches, ground loops and transmission
frequency variances.
Fiber optics cable remains quite stable and presents a secure means for
priority transmissions,which normally create problems for copper cable.
Fiber optics cable have exceptional ability to accommodate transmission
bandwidths, when matched with the proper mode of operation.
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