The Rayleigh scattering coefficient for a silica SMSI-fiber at a wavelength of 0.80 µm is 0.46 /km. The fiber has a refractive index of 1.6 and a numerical aperture of 0.14. When a light pulse of 60 ns duration at a wavelength of 0.80 µm is launched into the fiber, calculate the level in dB of the back scattered light compared with the Fresnel reflection from a clean break in the fiber. It may be assumed that the fiber is surrounded by air.

The Rayleigh scattering coefficient for a silica SMSI-fiber at a wavelength of 0.80 µm is 0.46 /km. The fiber has a refractive index of 1.6 and a numerical aperture of 0.14. When a light pulse of 60 ns duration at a wavelength of 0.80 µm is launched into the fiber, calculate the level in dB of the back scattered light compared with the Fresnel reflection from a clean break in the fiber. It may be assumed that the fiber is surrounded by air.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 47P: To save money on making military aircraft invisible to radar, an inventor decides to coat them with...

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