prepare briefly:

problem 1) describe different factors considered in the design of optical receiver.

problem 2) Describe the SPM and XPM effect in optical fibers.

problem 3) prepare down the desired features of a photodiode. Also give comparison of performance of PIN and APD photodiodes.

problem 4) A LED has 2V applied to its terminals; it draws 100 mA and produces 2 mW of optical power. What is the LED's conversion efficiency from electrical to optical power?

problem 5) Compute the material dispersion for a wavelength 10 nm below zero-dispersion wavelength.

problem 6) Describe the modulation response of laser for large-signal modulation. Also describe the mode control in tunable lasers.

problem 7) Derive an expression for receiver sensitivity of an APD.

problem 8) prepare a short note on the following :

(a) Pulse compression through chirping

(b) Non-radiative recombination

(c) Tertiary and quaternary materials for optical sources.