Tag Archive for: submarine

We want to design a submarine fiber optical system 2000 km long. The fiber has a specific…

We want to design a submarine fiber optical system 2000 km long. The fiber has a specific attenuation of 0.05 dB/km, a dispersion coefficient of 0.01 ns/km, while the transmitted signal has bandwidth B = 100 kHz centered at f0 = 1 MHz. Let the required output SNR be 40 dB and let the noise figure of the receiver be 5 dB. What is the required transmitted power to satisfy the SNR constraint?