5.10 Flashcards
What source is used in fibre optic?
Light
What is the five key elements of an optical fibre?
Core
Cladding
Coating
Strength member
Outer Jacket
What is the core of a fibre optic made of?
Glass or plastic
What is the cores purpose in fibre optic?
Provides the path for light propagation
What is the purpose of cladding?
Surrounds the core and prevents light from escaping*
What is the purpose of the coating?
It protects the core and the cladding
What is the purpose of the outer jacket?
It provides one last layer of protection and also adds strength to the fibre
What is the purpose of the strength member?
The strength member provides strength to the whole cable and helps prevent damage due to stress
What is refraction?
Refraction is the bending of light as it passes from one transparent medium to another
What is the earliest form of the fibre optic cable?
Single mode fibre optic
What are the two type of fibre optic?
Multi mode fibre and single mode
In which mode can fibre optic transfer more data?
Multi mode due to larger diameter
What data does fibre optic send?
Digital data
Fibre optic provides a smaller bandwidth. True or false?
False it provides a greater bandwidth
Since fibre optic is made of glass what is it unaffected by?
Electro magnetic interference (EMI)*
What are disadvantages of fibre optic transmissions?
Converters from optical and electrical
Repairs and splicing require special methods
Terminations require special care
Laser source can be hazardous
What are advantages of fibre optic transmissions?
*
What are the light sources for fibre optic?
Light emitting diodes(LED)
What must you ensure when connecting fibre optic to connectors?
They must connected cleanly, lens to lens.
Any system that requires data only in a digital format uses what?
Fibre optic
Fibre optic is immune to…..
Electro magnetic interference
Fibre optic is made of glass which is an insulator, making it susceptible to electromagnetic interference. True or false?
False, Fibre optic is made of glass which is an insulator, making it immune to electromagnetic interference.
