3.3 A 30 km long optical fibre has an attenuation of 0.8 dB/km at 1300 nm. Find the optical power launched into the fibre if the output power is 200 µW.

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3.3
A 30 km long optical fibre has an attenuation of 0.8 dB/km at 1300 nm. Find the
optical power launched into the fibre if the output power is 200 μW.
F
Transcribed Image Text:3.3 A 30 km long optical fibre has an attenuation of 0.8 dB/km at 1300 nm. Find the optical power launched into the fibre if the output power is 200 μW. F
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