WorksheetsEC8751_OC_Model-1_PartB
Total questions: 10
Worksheet time: 5mins
In high impedance preamplifier, how are the noise sources kept to minimum level?
By reducing dark current with proper selection of photodiode
By reducing thermal noise of biasing resistor
By using high impedance amplifier
All of the above
Which among the following misalignments give/gives rise to the occurrence of splice loss
Longitudinal separation between the end-faces of fiber
Angular tilt between fiber ends
Transverse offset between fiber ends
All of the above
Determine the attenuation per kilometer for a fiber whose length is 2 km, output voltage is 2.1 V at a wavelength of 0.85μm. The output voltage increases to 10.7 V when the fiber is cut-back to leave 2 metres. Determine the attenuation per km for the fiber at wavelength 0.85μm.
2.8dB/km
3.1dB/km
3.5dB/km
8dB/km
In pulse dispersion measurements, the 3dB pulse broadening for the fiber is 10.5 ns/km and the length of the fiber is 1.2 km. Calculate the optical bandwidth for the fiber.
32 MHz km
45 MHz km
41.9 MHz km
10 MHz km
What stands for x in the given equation?
δn = qλ/x
Displacement
Thickness
Constant
Coefficient of refraction
The ________ method gives an accurate measurement of the refractive index profile.
Slab
Biometric
GSLB
Tuning
A ____________ digital hierarchy was required to enable the international communications network to evolve in the optical fiber era.
Asynchronous
Dedicated
Seismic
Synchronous
In order to access for end-to-end networking of optical channels to transparently convey information, the _____________ is employed in the OTN structure.
Presentation layer
Session layer
OPU
OCh layer
The ___________ provides information about the physical path and wavelength assignment for all active light paths.
Network state
RWA
LAN topology
Secluded communication protocol
Each synchronous transfer signal is composed of
8 frames
80 frames
800 frames
8000 frames
