Some fiber optic communication systems use laser amplification to boost the intensity of light pulses passing through an optical fiber. A short segment of laser amplifier fiber is spliced into the main fiber so that the light pulses must pass through the laser amplifier fiber on their way to their destination. The light emerging from the laser amplifier fiber is much brighter than it was when it entered. One interesting aspect of the light emerging from the laser amplifier fiber is that it
A) has the same color as the light entering the amplifier fiber.
B) is slightly redder than the light entering the amplifier fiber-its wavelength is longer.
C) is slightly bluer than the light entering the amplifier fiber-its wavelength is shorter.
D) travels faster than the light entering the amplifier fiber.

Question

Quizplus · Accepted Answer

The light emerging from a laser amplifier in a fiber optic system retains the same color as the light entering the amplifier, meaning its wavelength remains unchanged. The amplification process increases the intensity of the light without altering its wavelength.

Some Fiber Optic Communication Systems Use Laser Amplification to Boost