Question

A transmitter has an output power of 0.1mW. It is used with a fiber having NA=0.25,

attenuation of 6dB/Km and length 0.5 km. The link contains two connectors of 2dB

average loss. The receiver has a minimum acceptable power (sensitivity) of -35dBm.

The design has allowed a 4dB margin. Calculate the link power budget.​

Answer 1

answer is written below:

the light wave occupies the frequency range between 2 x 1012 Hz to 3.7 x 1012 Hz. Thus the information carrying capability of fiber optic cables is much higher. Fiber optic cables offers bery less signal attenuation over long distances. Typically it is less than 1 dB/km.

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