A semiconductor laser has a threshold current of 10 mA and a slope efficiency of 0.32 W.A1 (measured from one output facet). What is the output power of the laser in mW when the laser is driven with a current of 33 mA? Answer:
A semiconductor laser has a threshold current of 10 mA and a slope efficiency of 0.32 W.A1 (measured from one output facet). What is the output power of the laser in mW when the laser is driven with a current of 33 mA? Answer:
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Transcribed Image Text:A semiconductor laser has a threshold current of 10 mA and a slope efficiency of 0.32 W.A-1 (measured from one output
facet).
What is the output power of the laser in mW when the laser is driven with a current of 33 mA?
Answer:
Assuming the laser emits equal powers from its two facets, what is the 'wall-plug' efficiency for converting electrical power
into optical output if the voltage across the laser is 1.3 V at the forward bias current 33 mA? Express your answer as as
percentage.
Answer:
The laser is now modulated with binary digital data by adding a 40 mA peak-to-peak signal with zero mean to the DC bias
current of 33 mA.
What is the extinction ratio of the modulated optical output from the laser? Give your answer in dB.
Answer:
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