The figure shows an optical fiber in which a central plastic core of index of refraction n1 = 1.64 is surrounded by a plastic sheath of index of refraction n2 = 1.56. Light can travel along different paths within the central core, leading to different travel times through the fiber. This causes an initially short pulse of light to spread as it travels along the fiber, resulting in information loss. Consider light that travels directly along the central axis of the fiber and light that is repeatedly reflected at the critical angle along the core-sheath interface, reflecting from side to side as it travels down the central core. If the fiber length is 390 m, what is the difference in the travel times along these two routes? NUmber i Units

The figure shows an optical fiber in which a central plastic core of index of refraction n1 = 1.64 is surrounded by a plastic sheath of index of refraction n2 = 1.56. Light can travel along different paths within the central core, leading to different travel times through the fiber. This causes an initially short pulse of light to spread as it travels along the fiber, resulting in information loss. Consider light that travels directly along the central axis of the fiber and light that is repeatedly reflected at the critical angle along the core-sheath interface, reflecting from side to side as it travels down the central core. If the fiber length is 390 m, what is the difference in the travel times along these two routes? NUmber i Units

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Refraction of Light

Refraction is a change in the direction of light rays when they travel from one medium to another. It is the bending of light when it goes through different media.

Angle of Refraction

Light is considered by many scientists to have dual nature, both particle nature and wave nature. First, Particle nature is one in which we consider a stream of packets of energy called photons. Second, Wave nature is considering light as electromagnetic radiation whereas part of it is perceived by humans. Visible spectrum defined by humans lies in a range of 400 to 700 nm wavelengths.

Index of Refraction of Diamond

Diamond, the world’s hardest naturally occurring material and mineral known, is a solid form of the element carbon. The atoms are arranged in a crystal structure called diamond cubic. They exist in a huge variety of colours. Also, they are one of the best conductors of heat and have a very high melting point.

Question

The figure shows an optical fiber in which a central plastic core of index of refraction n1 = 1.64 is surrounded by a plastic sheath of
index of refraction n2 = 1.56. Light can travel along different paths within the central core, leading to different travel times through the
fiber. This causes an initially short pulse of light to spread as it travels along the fiber, resulting in information loss. Consider light that
travels directly along the central axis of the fiber and light that is repeatedly reflected at the critical angle along the core-sheath
interface, reflecting from side to side as it travels down the central core. If the fiber length is 390 m, what is the difference in the travel
times along these two routes?
NUmber
i
Units

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