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Answer to Question #18347 in Optics for Umer

Question #18347
A 1-Gbit/s signal has an average power of 1μW at the receiver. What is the average energy in each pulse?
Expert's answer
Signal of 1 Gbit/s means10^9 pulses per second.
Power of 1μW means 10^-6 joules per second.

By diving, the energy of each pulse is
E = (10^-6 J) / (10^9) = 10^-15 J

Answer: 1 femtojoule

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