TAv10.2

which of these statements are advantages of fibre optic cable?

Select all correct answers

• They are small in size and low in weight

• They are intrinsically safe

• They suffer low losses

• They are robust

• They can be easily terminated

A _______ mode will take the most time to traverse a fibre optic cable?

Select the true statement from the answers below regarding fibre optic modes

• Light rays entering a fibre optic aperture on a steep angle are referred to as high modes

• Light rays entering a fibre optic aperture on a shallow angle are referred to as high modes

• High modes traverse a fibre optic cable faster than low modes

• Refractive Index (n)

• Snell’s law

• Fresnel Reflection

• Critical Angle

• Refractive Index (n)

• Snell’s law

• Fresnel Reflection

• Critical Angle

On the diagram what represents the Fresnel Reflection?

• A

• B

• C

What name is given to area that traps rays of light that hit the end face of the fibre?

• Cone Of Acceptance

• Angle of Rejection

• Fresnel Reflection

• Refractive Index

What name is given to the component part of a fibre optic cable highlighted as A in the diagram?

Which of the following are ways in which you may reduce Modal Dispersion?

• Graded Index Fibre

• Single Mode Fibre

• Multi Mode Fibre

• Co-Axial Cable

• Using a single Wavelength light source