OPTICAL FIBER - FULL

Optical fibre based on the principle of

• total internal reflection.

• total internal refraction.

• diffraction.

• interference.

Tags

NGSS.HS-PS4-5

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.

The inner part of the optical fibre which carries light is called

• Cladding

• Core

• Sheath

• Cover

In an optical fiber, the concept of Numerical aperture is applicable in describing the ability of __________

• Light Collection

• Light Scattering

• Light Dispersion

• Light Polarization

Optical fibers for communication use are mostly fabricated from

• Plastic

• Silica or multicomponent glass

• Ceramics

• Copper

What is dispersion in optical fiber communication?

• Compression of light pulses

• Broadening of transmitted light pulses along the channel

• Overlapping of light pulses on compression

• Absorption of light pulses

Chromatic dispersion is also called as intermodal dispersion. State whether the given statement true or false.

• True

• False

Intermodal dispersion occurring in a large amount in multimode step index fiber results in

• Propagation of the fiber

• Propagating through the fiber

• Pulse broadening at output

• Attenuation of waves

What are fibre optics?

• thin, flexible fibres of glass/plastic

• flexible fibers of copper

• strands of rubber

• glow toys