When purchasing a fiber optic cable, it is important to understand
the different varieties of core characteristics that are available
within the cable itself. Each of these different characteristics will
have different effects on your ability to transmit information reliably,
and these different characteristics also affect the cabling project.
You must search the cost of fiber optic cable if you bought the cable. Now, let's take a look at the most common fiber optic cables.
Simplex Fiber Cable
A simplex fiber cable
consists of a single strand of glass of plastic fiber, and is used for
applications that only require one-way data transfer. Simplex fiber is
most often used where only a single transmit and receive line is
required between devices or when a multiplex data signal is used
(bi-directional communication over a single fiber). Simplex fiber is
available in singlemode and multimode. For example, an interstate
trucking scale that sends the weight of the truck to a monitoring
station or an oil line monitor that sends data about oil flow to a
central location.
Duplex Fiber Cable
A duplex fiber cable
consists of two strand fibers of glass or plastic. Typically found in a
"zipcord"(side-by-side) construction format, this cable is most often
used for duplex communication between devices where a separate transmit
and receive are required. Duplex fiber is available in singlemode and
multimode. Use multimode duplex fiber optic cable or single mode duplex
fiber for applications that require simultaneous, bi-directional data
transfer. Workstations, fiber switches and servers, fiber modems, and
similar hardware require duplex fiber cable.
Cable Design Criteria For The Pulling Strength,Water Protection,Fiber Code Ratings
Pulling Strength:
Some cable is simply laid into cable trays or ditches. So pull strength
is not too important. But other cable may be pulled through 2 km or
more of conduit. Even with lots of cable lubricant, pulling tension can
be high. Most cables get their strength from an agamid fiber, a unique
polymer fiber that is very strong but does not stretch - so pulling on
it will not stress the other components in the cable. The simplest
simplex cable has a pull strength of 100-200 pounds, while outside plant
cable may have a specification of over 800 pounds.
Water Protection:
Outdoors, every cable must be protected from water or moisture. It
starts with a moisture resistant jacket, usually PE (polyethylene), and a
filling of water-blocking material. The usual way is to flood the cable
with a water-blocking gel. It's effective but messy - requiring a gel
remover. A newer alternative is dry water blocking using a miracle
powder - the stuff developed to absorb moisture in disposable diapers.
Check with your cable supplier to see if they offer it.
Fire Code Ratings:
Every cable installed indoors must meet fire codes. That means the
jacket must be rated for fire resistance, with ratings for general use,
riser (a vertical cable feeds flames more than horizontal) and plenum
(for installation in air-handling areas. Most indoor cables use PVC
(polyvinyl chloride) jacketing for fire retardance. In the United
States, all premises cables must carry identification and flammability
ratings per the NEC (National Electrical Code) paragraph 770.
FiberStore
is one of the industry's fastest growing fiber optic cable
manufacturer, specializing in providing quality, cost-effective
retailing, wholesale and OEM fiber optic products. For more information
on Simplex Fiber Cable or Duplex Fiber Cable and customization service,
please email to sales@fiberstore.com or visit FiberStore.com.
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