![SOLVED:The power of a 10 mW laser beam decreases to 40 μW after traversing through 40 km of an optical fiber. Calculate the attenuation of the fiber in dB / km SOLVED:The power of a 10 mW laser beam decreases to 40 μW after traversing through 40 km of an optical fiber. Calculate the attenuation of the fiber in dB / km](https://cdn.numerade.com/previews/99a0f162-e8e3-40bd-a530-9cd64ec93f01_large.jpg)
SOLVED:The power of a 10 mW laser beam decreases to 40 μW after traversing through 40 km of an optical fiber. Calculate the attenuation of the fiber in dB / km
How does the power of a laser beam depend on one's distance from the source? Does it obey the inverse square law? - Quora
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