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PART (^

Answer any two full questions, each carries 20 marks.
What are the different components used in WDM system? Explain any two.
Compare different parameters of any four optical amplifiers.
What is Li-Fi technology?
What are the advantages of free space optical communication?
Explain the working of EDFA. What are the advantages of EDFA?
What do you meant by fiber bragg grating?
How a fault is detected in an optical fiber? Explain the principle with necessary
equations.
What is TDFA? Explain the working of TDFA.
What is tunable optical filter?

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