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Fibre Optic FAQ

Frequently Asked Questions about Fibre Optic Products

What is the difference between regular Multimode Fibre and 10 Gig Multimode Fibre?

How do you select the right type of fibre optic cable?

What are the bandwidth and application differences between copper and fiber optic cabling?

What are the common fiber optic connector types?

There are several types of fiber optic connectors available today. The most common are: ST, SC, FC, MT-RJ and LC style connectors.

All of these types of connectors can be used with either multimode or single mode fiber.

There are three types of polishes which can be applied to a fiber connector: PC or Physical contact, UPC or Ultra Physical contact and APC or Angled Physical contact.

Each polish type exhibits a different level of back reflection. Back reflection is a measure of the light reflected off the end of a fiber connector. This light is measured in decibals.

For certain applications, the amount of back reflection on a fiber connector is critical.

What is the MT-RJ connector? How does it work?

What is the meaning of OFNR and OFNP fiber cable designations?

What is the importance of the "A" and "B" markers on a duplex fiber assembly?

When do you use Plenum Cable?

What is LSZH cable?

When is a Fibre Loopback Assembly necessary?

What are attenuators used for?

What is mode conditioning?

How do you clean a fibre cable

Is fibre more difficult to install than copper?

No, Fibre is just as simple, and sometimes easier, to install than copper. Since fibre has been accepted as the standard choice for communications backbones for many years, today's installers are comfortable with the technology. In fact, new generation high-speed copper networks, such as Category 5e and Category 6 Unshielded Twisted Pair (UTP) cable require more stringent and time-consuming installation techniques than those of fibre. Compared to newer grades of copper cable, fewer regulations exist on the methods by which optical cable is pulled and terminated. In addition, there is no need to worry about the location of EMI/RFI sources during installation. Furthermore, optical fibre cables are stronger, lighter and smaller than comparable copper cable designs, and there are few routing restrictions, particularly in areas with other electrical power cables.

What is the difference between simplex and duplex fiber optic cable?

A simplex fiber cable consists of a single strand of glass of plastic fiber. Simplex fiber is most often used where only a single transmit and/or receive line is required between devices or when a multiplex data signal is used (bi-directional communication over a single fiber). A duplex fiber cable consists of two strands of glass or plastic fiber. Typically found in a “zipcord” construction format, this cable is most often used for duplex communication between devices where a separate transmit and receive are required.