Question 1: How will you measure:
a) Fiber refractive index profile
b) Numerical Aperture in the optical fiber
Question 2: How will you measure:
a) Attenuation
b) Fiber diameter in optical communication system?
Question 3: Write brief note on the Numerical aperture measurement.
Question 4: What do you mean by the term internal quantum efficiency and external quantum efficiency of the optical source?
Question 5: What do you mean by the term population inversion?
Question 6: Illustrate threshold condition for the Laser oscillations.
Question 7: Describe the term spontaneous emission.
Question 8: Define the term LED internal quantum efficiency.
Question 9: Compare LEDs with injection laser in respect of its benefits and drawbacks in optical fiber communication.
Question 10: Describe the principle and working of LASER diode. As well describe the modulation of Laser diodes.