Fiber Cables

Fiber Optics

• Fiber optic cables are faster and more expensive as compared to copper cables.

• Fiber optic cables are immune to Electro-magnetic Interference (EMI).

• Uses Light Emitting Diodes (LED) to transmit data in the form of light.

• However, fiber optic cables are very fragile and easy to break as the core is either glass or plastic.

Single mode fiber (SMF)

• This mode supports very great distance which allows Internet Service Providers (ISPs) to interconnect cites.

• The fiber core is the size of 9 microns.

• The cladding has a size of 125 microns.

Multi mode fiber (MMF)

• This mode supports a shorter distance as compared to single mode fiber.

• The fiber code has a size of 50 or 62.5 microns.

• The cladding has a size of 125 microns.

Fiber connectors

• Lucent connector (LC)

• Straight tip (ST)

• Subscriber connector (SC)

• Mechanical transfer Registered jack  (MTRJ)

Transceivers 

• Allows you to connect a fiber cable to a network switch.

• Small form-factor pluggable (SFP)

• Enhanced form-factor pluggable (SFP+)

• Quad small form-factor pluggable (QSFP)

• Enhanced quad small form-factor pluggable (QSFP+)

Multiplexing

• When working with fiber cabling, a Multiplexer (MUX) is used to take multiple incoming signals and send them through the fiber cable.

• A Demultiplexer (DEMUX) is used to split the outbound signals from a fiber cable to their different links.

• With Course Wavelength Division Multiplexing (CWDM) supports up to 18 wavelengths per fiber and has a shorter transmitting distance.

• With Dense Wavelength Division Multiplexing (DWDM) supports up to 96 wavelength per fiber over a greater distance.