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// Scilab code Ex12.7: Pg:473 (2008)
clc;clear;
Pi = 1; // Initial Power level of optical fibre, mW
Po = 0.85; // Output Power level of optical fibre, mW
L = 0.5; // Lenght of optical fibre, km
alpha = (10/L)*log10(Pi/Po); // Attenuation of optical signal, dB/km
printf("\nThe attenuation of optical signal = %4.2f dB/km", alpha);
// Result
// The attenuation of optical signal = 1.41 dB/km
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