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Chapter 32: Problem 12

Many fiber-optics devices have minimum specified bending angles. Why?

Short Answer

Expert verified
Answer: Minimum bending angles are important in fiber-optic devices to ensure proper functioning and long-term reliability. Adhering to these specifications helps prevent performance degradation due to light signal loss and attenuation, as well as physical damage to the fiber caused by excessive stress.

Step by step solution

01

Introduction to fiber optics devices

Fiber-optic devices are a type of technology that uses thin, flexible strands of glass, plastic or other materials to transmit data in the form of light pulses. They have many critical applications, such as in telecommunications, and live streaming of events. One significant advantage of these devices is their ability to efficiently transmit data over long distances compared to other media such as copper cables.
02

Minimum bending angles in fiber-optic devices

A minimum bending angle refers to the smallest angle at which a fiber-optic device or cable can be bent without negatively impacting its performance. These minimum bending angles are specified by the manufacturer to ensure a reliable functioning of the device. Bending the cables beyond the specified angle can lead to signal degradation, attenuation, and an increase in failure risk.
03

Light propagation and signal loss

Fiber-optic devices depend on the total internal reflection, which allows light to propagate within the fiber efficiently. When the fiber cable is bent beyond the minimum specified angle, some of the light within the cable may no longer undergo total internal reflection. Consequently, it will escape the fiber, causing signal loss or attenuation. Excessive signal loss can permanently damage the fiber or result in unreliable communication.
04

Fiber stress and potential damage

Another reason behind specifying bending angles is to minimize stress on the fiber. Bending the cable excessively can cause stress in the glass or plastic material, leading to cracks, microbends, or fiber breakage over time. This damage can result in degraded performance and reduced service life for the fiber-optic device. In conclusion, minimum bending angles are crucial for ensuring the proper functioning and long-term reliability of fiber-optic devices. Adhering to these specifications helps prevent performance degradation due to light signal loss and attenuation, as well as physical damage to the fiber caused by excessive stress.

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Most popular questions from this chapter

An object is located at a distance of \(100 . \mathrm{cm}\) from a concave mirror of focal length \(20.0 \mathrm{~cm}\). Another concave mirror of focal length \(5.00 \mathrm{~cm}\) is located \(20.0 \mathrm{~cm}\) in front of the first concave mirror. The reflecting sides of the two mirrors face each other. What is the location of the final image formed by the two mirrors and the total magnification by the combination?

32.1 Legend says that Archimedes set the Roman fleet on fire as it was invading Syracuse. Archimedes created a huge ______ mirror, and he focused the Sun's rays on the Roman vessels. a) plane c) parabolic focusing b) parabolic diverging

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A \(45^{\circ}-45^{\circ}-90^{\circ}\) triangular prism can be used to reverse a light beam: The light enters perpendicular to the hypotenuse of the prism, reflects off each leg, and emerges perpendicular to the hypotenuse again. The surfaces of the prism are not silvered. If the prism is made of glass with in dex of refraction \(n_{\text {glass }}=1.520\) and the prism is surrounded by air, the light beam will be reflected with a minimum loss of intensity (there are reflection losses as the light enters and leaves the prism). a) Will this work if the prism is under water, which has index of refraction \(n_{\mathrm{H}_{2} \mathrm{O}}=1.333 ?\) b) Such prisms are used, in preference to mirrors, to bend the optical path in quality binoculars. Why?

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