FON quiz 3

How many implementation methods are available for optical isolators?

• a) One

• b) Four

• c) Two

• d) Three

A device which is made of isolators and follows a closed loop path is called as a

• a) Circulator

• b) Gyrator

• c) Attenuator

• d) Connector

The commercially available circulators exhibit insertion losses around ________________

• a) 2 dB

• b) 0.7 dB

• c) 0.2 dB

• d) 1 dB

It is a passive device which allows the flow of optical signal power in only one direction and preventing reflections in the backward direction.

• a) Fiber slice

• b) Optical fiber connector

• c) Optical isolator

• d) Optical coupler

Which feature of an optical isolator makes it attractive to use with optical amplifier?

• a) Low loss

• b) Wavelength blocking

• c) Low refractive index

• d) Attenuation

Magneto-optic devices can be used to function as isolators. State whether the given statement is true or false.

• a) True

• b) False

______________ are the devices which are employed to eliminate the laser chirp.

• a) Optical intensity modulators

• b) Demodulators

• c) Circulators

• d) Optical Isolators

In an optical network, increase in the number of lasers ________the bit rate.

• a. Increases

• b. Stabilizes

• c. Decreases

• d. None of the above

In circulator, an optical path of signal follows _______

• a. An open loop

• b. A closed loop

• c. Both a and b

• d. None of the above

Which among the following controls the length of Fabry-Perot interferometer so that it can act as a tunable optical filter?

• a. Transducer

• b. Tachometer

• c. Multimeter

• d. Phase-meter