Top 150+ Solved Optical Communication MCQ Questions Answer
Q. Almost of the transmitter power is wasted in the use of external modulators.
a. half
b. quarter
c. one-third
d. twice
Q. The line width in the range of bit rate is specified for ASK heterodyne detection.
a. 8%
b. 2 to 8%
c. 10 t0 50%
d. 70%
Q. The frequency deviation at frequencies above 1 MHz is typically
a. 10 to 20 ma-1
b. 100 to 500 ma-1
c. 1000 to 2000 ma-1
d. 30 to 40 ma-1
Q. External modulation for modulation format allows the most sensitive coherent detection mechanism.
a. fsk
b. dsk
c. psk
d. ask
Q. can potentially provide spectral conservation through the use of multilevel signalling.
a. m-ary psk
b. mfsk
c. ask
d. dfsk
Q. The digital transmission on implementation of polarization modulation which involves polarization characteristics of the transmitted optical signal is known as
a. frequency shift keying
b. amplitude shift keying
c. phase shift keying
d. polarization shift keying
Q. is fully depleted by employing electric fields.
a. avalanche photodiode
b. p-i-n diode
c. varactor diode
d. p-n diode
Q. At low gain, the transit time and RC effects
a. are negligible
b. are very less
c. dominate
d. reduce gradually
Q. The phenomenon leading to avalanche breakdown in reverse-biased diodes is known as
a. is negligible
b. very less
c. increases gradually
d. dominates
Q. How many circuits are present in an equivalent circuit for the digital optical fiber receiver?
a. four
b. one
c. three
d. two