Answer to Question #268381 in Electrical Engineering for Fatima

Question #268381

Q3/ Analogue optical fiber communications link have OSNR = 10 dBm and the signal


to noise ratio (SNR) = -200dBm. What is the indication about this system? Suggest a


solution about this problem.

1
Expert's answer
2021-11-19T00:07:01-0500

The optical signal may be polarized, but the noise is usually not and, depending on the receiver polarization sensitivity, the noise must be considered with a single or two polarizations. Any active (or passive) linear optical device amplifies (or attenuates) simultaneously the incoming signal and the incoming noise


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