K Bhanu Kiran Transmission Quiz

The diameter of core and clading are ......

• 6, 125 um
• 8,125 um
• 125,8 um
• 125, 6 um

Which standard is developed by ITU-T

• SONET
• SDH
• Either a or B
• Neither A or B

according to ITU standard which fiber is best for FTTH services

• G.652
• G.555
• multimode
• G.657

The refractive index of cladding is lower than that of core by....

• 0.01
• 0.02
• 0.001
• 0.07

A device that reduces the intensity of light in optical fiber communications is _____

• compressor
• Optical attenuator
• Barometer
• Reducer

Which are related with attenuation...?

• Intrinsic Factor
• Scattering
• Absorption
• All of above

The optical source used for detection of optical signal is ____

• IR sensors
• Photodiodes
• Zener diodes
• Transistors

In a graded index fiber, total reflected light takes :

• Straight path
• Parabolic path
• Elliptical path
• Circular path

In optical fibers, propagation of light due to

• Differaction
• Total interal Reflection
• Refration
• Reflection

Total internal reflection happens, when....

• angle of incidence is greater than critical angle
• b)angle of incidence is lesser than critical angle
• c)angle of incidence is equal to critical
• d)None of these