Optical fiber communication

Which optical fiber is the best suited for local

area network applications?

• Single mode fiber

• Multi mode fiber

• Step index fiber

• Graded index fiber

Which device is used as the light source for

long distance and high data rate applications in

fiber optic communication?

• PIN diode

• Photo diode

• Laser diode

• Light emitting diode

Which technology has replaced the copper

wire in the core communication networks?

• Satelite communication

• Radio wave communication

• Micro wave communication

• Optical fiber communication

What is the name of the loss occurring due

to the bend of finite radius in the optical fiber

cable?

• Luminance loss

• Dispersion loss

• Hysteresis loss

• Radiative loss

Which device is used as the light source for

short distance and low data rate applications in

fiber optic communication?

• Tunnel diode

• Photo diode

• Schottky diode

• Light emitting diode |

Which type of optical fiber is used to carry

telephone and television signals?

• Single mode fiber

• Multi mode fiber

• Step index fiber

• Graded index fiber |

Which electronic device is used to convert

the signal at receiving terminal of fiber optic

communication channel?

• Opto coupler

• Opto isolator

• Photo detector

• Light emitting diode

What is the basis for the selection of LED or

LASER diode as the light source in optical fiber

communication?

• Amplitude

• Frequency

• Application

• Operating temperature

What is the refractive index of vacuum

• 1

• Less than 1

• Greater than 1

• Infinity

What is the name of optical fiber cable part

marked X?

• Core

• Cladding

• Buffer jacket

• Strength member