In optical fiber communication, the electrical signal dropping to half – McqOptions

MCQOPTIONS

1.	In optical fiber communication, the electrical signal dropping to half its constant value due to modulated portion of optical signal corresponds to _______
A.	6 dB
B.	3 dB
C.	4 dB
D.	5 db
Answer» C. 4 dB

Discussion

No Comment Found

Related MCQs

Determine CW operating lifetime for LED with βrt = -0.58 and degradation rate βr = 7.86*10-11 h-1.
Determine degradation rate βrif constant junction temperature is 17 degree celsius.
The 3 dB electrical bandwidth B is 42 MHz. Determine 3dB optical bandwidth Bopt.
Determine the 3 dB electrical bandwidth at 3 dB optical bandwidth Bopt of 56.2 MHz.
The optical power at 20 MHz is 246.2 μW. Determine dc drive current applied to device with carrier recombination lifetime for LED of 6ns.
When a constant d.c. drive current is applied to device, the optical o/p power is 320 μm. Determine optical o/p power when device is modulated at frequency 30 MHz with minority carrier recombination lifetime of LED i.e. 5ns.
The optical bandwidth is _____________ the electrical bandwidth.
The optical 3 dB point occurs when currents ratio is equal to _____________
The active layer composition must be adjusted if a particular center wavelength is desired.
The internal quantum efficiency of LEDs decreasing _______________ with ________________ temperature.