OPTICAL FIBERS AND THEIR PROPERTIES

Optical fibre based on the principle of

• total internal reflection.

• total internal refraction.

• diffraction.

• interference.

The core of the optical fibre is

• opaque and conducting material.

• opaque and dielectric material.

• transparent and conducting material.

• transparent and dielectric material.

A measurement of the ability of an optical fibre to capture light is called

• acceptance angle.

• cladding.

• numerical aperature.

• critical angle.

The unit of Numerical aperature is

• meter

• degree

• Coulomb per meter

• no unit.

Which of the following statement is correct?

• Refractive index of core and cladding are equal.

• Refractive index of core is more then that of cladding.

• Refractive index of core is less then that of cladding.

• Refractive index of core is less or equal to that of cladding.

If the numerical aperature of an optical fibre is 0.515, then the maximum angle of incidence is __________ degree.

• 0.008

• 17.5

• 31

• 67

Which part is not included in the fiber-optic communication system?

• Transmitter

• Transmission channel

• Transformer

• Receiver

What are fibre optics?

• thin, flexible fibres of glass/plastic
• flexible fibers of copper
• strands of rubber
• those glow toys

How do Fiber Optics work?

• By connecting and transferring energy
• By remitting and subtracting power from other fiber optics
• By using light pulses to transfer data
• By converting sound waves in to binary code

What are the two general types of fiber optic cable found in current networking environments?

• Red and Green
• Singlemode and Multimode
• High-frequency and Low-frequency
• Narrowband and Wideband