Light travels along optical fibers by

Light travels along optical fibers by
by

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Answer :

Light travels along optical fibers by Total internal reflection

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A mode filter is a device that attenuates specific modes propagating in the core of an optical fiber. What mode propagating along single mode fibers do mode filters eliminate?

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Last Answer : Second-order mode.

Which semiconductor sources (LD or LED) emit more focused light and are capable of launching sufficient optical power into both single mode and multimode fibers?

Description : Which semiconductor sources (LD or LED) emit more focused light and are capable of launching sufficient optical power into both single mode and multimode fibers?

Last Answer : LDs.

Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

Description : Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

Last Answer : ANSWER: A

Optical Fiber Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

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Optical fibers are the fine strands of _____. A. Glass B. Iron C. Calcium D. Mercury

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_______uses two optical fibers anda long-wavelaser source. A) 1000Base-SX B) 1000Base-LX C) 1000Base-T D) none of the above

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______ uses two optical fibers and a short-wave laser source, A) 1000Base-SX B) 1000Base-LX C) 1000Base-T D) none of the above

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Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?

Description : Which type of optical splitter (Y-coupler or T-coupler) splits only a small amount of power from the input fiber to one of the output fibers?

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Which type of fiber optic connector (butt-jointed or expanded beam) brings the prepared ends of two optical fibers into close contact?

Description : Which type of fiber optic connector (butt-jointed or expanded beam) brings the prepared ends of two optical fibers into close contact?

Last Answer : Butt-jointed connectors.

What is the basic fiber cleaving technique for preparing optical fibers for coupling?

Description : What is the basic fiber cleaving technique for preparing optical fibers for coupling?

Last Answer : Score-and-break.

List the three techniques used by manufacturers to buffer optical fibers.

Description : List the three techniques used by manufacturers to buffer optical fibers.

Last Answer : Tight-buffered, loose-tube, and gel-filled loose-tube.

List three benefits that properly cabled optical fibers provide.

Description : List three benefits that properly cabled optical fibers provide.

Last Answer : a. Protect optical fibers from damage or breakage during installation and over the fiber's lifetime. b. Provide stable fiber transmission characteristics compared with uncabled fibers. c. Maintain the physical integrity of the optical fiber.

List the types of materials used in fabricating low-loss, long wavelength optical fibers.

Description : List the types of materials used in fabricating low-loss, long wavelength optical fibers.

Last Answer : Heavy-metal fluorides, chalcogenide glasses, and crystalline materials.

Multimode optical fibers can have a step-index or graded index refractive index profile. Which fiber, multimode step-index or multimode graded-index fiber, usually performs better?

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Will an optical fiber's attenuation coefficient vary with changes in wavelength?

Description : Will an optical fiber's attenuation coefficient vary with changes in wavelength?

Last Answer : Yes.

Optical fibers or cables should never be bent at a radius of curvature smaller than a certain value. Identify this radius of curvature Optical fibers or cables should never be bent at a radius of curvature smaller than a certain value. Identify this radius of curvature

Description : Optical fibers or cables should never be bent at a radius of curvature smaller than a certain value. Identify this radius of curvature

Last Answer : Minimum bend radius.

What are the two basic types of optical fibers?

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Last Answer : Multimode and single mode fibers.

How can loss be reduced during construction (or fabrication) of optical fibers?

Description : How can loss be reduced during construction (or fabrication) of optical fibers?

Last Answer : By removing the impurities from optical fiber.

Optical fibers for telecommunications are typically about _____ mils thick and consists of a glass core, a glass cladding of lower index of refraction, and a protective coating ∙ a. 5 ∙ b. 6 ∙ c. 7 ∙ d. 8

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Last Answer : ∙ a. 5

The ultrapure glass used to manufacture optical fibers is approximately ___pure ∙ a. 99.9 % ∙ b. 99.99 % ∙ c. 99.999 % ∙ d. 99.9999 %

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Last Answer : d. 99.9999 %

Unlike coax and twisted pair, optical fibers are immune to

Description : Unlike coax and twisted pair, optical fibers are immune to  a. High-frequency transmission b. Signal attenuation c. Power loss d. Electromagnetic interference

Last Answer : Unlike coax and twisted pair, optical fibers are immune to Electromagnetic interference

Light is confined within the core of a simple optical fiber by:

Description : Light is confined within the core of a simple optical fiber by:  (1) Refraction. (2) Total internal reflection at the outer edge of the cladding. (3) Total internal reflection at the core cladding boundary. (4) Reflection from the fiber's plastic coating.

Last Answer : Light is confined within the core of a simple optical fiber by: Total internal reflection at the core cladding boundary. 

A light ray incident on the optical fiber core is propagated along the fiber. Is the angle of incidence of the light ray entering the fiber larger or smaller than the acceptance angle

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Last Answer : Smaller.

Two methods describe how light propagates along an optical fiber. These methods define two theories of light propagation. What do we call these two theories?

Description : Two methods describe how light propagates along an optical fiber. These methods define two theories of light propagation. What do we call these two theories?

Last Answer : The ray theory and the mode theory.

A charge particle travels along a straight line with a speed v in region where both electric field E and magnetic field b are present.It follows that

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Last Answer : A charge particle travels along a straight line with a speed v in region where both electric field E ... |=v|E|` and the two fields are perpendicular

When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of – (1) Vesicles (2) Cleft (3) Mitochondria (4) All of the above

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Last Answer : (1) Vesicles Explanation: The electrical impulses stimulate the release of vesicles. These store various neurotransmitters that are released at the synapse. Vesicles are essential for propagating nerve impulses between neurons and are constantly recreated by the cell.

A streamline is a line in flow field, (A) That is traced by all the fluid particles passing through a given point (B) Along which a fluid particle travels (C) Such that at every point on it, the velocity is tangential to it (D) None of these

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A wavefront undergoes a phase change as it travels along the fiber. If the wavefront transverses the fiber twice and is reflected twice and the total phase change is equal to 1/2 p, will the wavefront disappear? If yes, why?

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.As a wave travels down a spring, the amplitude slowly decreases. Why does this occur? A. The law of conservation of energy does not apply to waves. B. The energy is spread out along the entire length of the spring. C. The wave slows down as it travels along the spring. D. Some energy is lost due to friction as the particles in the spring rub against each other. E. all of the above

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Last Answer : D. Some energy is lost due to friction as the particles in the spring rub against each other.

Do small core distortions formed by arc fusion's self alignment mechanism have more of an affect on light propagating through multimode or single mode fibers?

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Last Answer : Single mode fibers.

Light propagates in multimode graded-index fibers according to refraction and total internal reflection. When does total internal reflection occur?

Description : Light propagates in multimode graded-index fibers according to refraction and total internal reflection. When does total internal reflection occur?

Last Answer : When the angle of incidence becomes larger than the critical angle of incidence.

In multimode step-index fibers, the majority of light propagates in the fiber core for what reason?

Description : In multimode step-index fibers, the majority of light propagates in the fiber core for what reason?

Last Answer : Most modes in multimode step-index fibers propagate far from cutoff.

They experimented with light transmission cables through bundle of fibers and lead to the development of flexible fiberscope. ∙ A. Townes, Schawlow and Kao ∙ B. Maiman, Kao and Bockham ∙ C. Maurer, Kapron and Keck ∙ D. Van Heel, Hopkins and Kapany

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Last Answer : D. Van Heel, Hopkins and Kapany

They experimented with light transmission cables through bundle of fibers and lead to the development of flexible fiberscope

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Last Answer : Van Heel, Hopkins and Kapany

Delay differences between the source wavelengths occur as the optical signal propagates along the fiber. What is this called?

Description : Delay differences between the source wavelengths occur as the optical signal propagates along the fiber. What is this called?

Last Answer : Differential group delay t(l).

Low-order and high-order modes propagate along an optical fiber. How are modes determined to be low-order or high order modes?

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Last Answer : Depends on the bending caused by the velocity difference of the wave traveling through different mediums

I heard that If anything travels at the speed of light space time warps ; then what about light...

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Q: Which travels the fastest: Light or Sound? -General Knowledge

Description : Q: Which travels the fastest: Light or Sound? -General Knowledge

Last Answer : Light is the answer

The refractive indices of four media A, B, C and D are given in the following table: light-reflection-and-refraction-chapter-wise-important-questions-class-10-science-9 If light, travels from one medium to another, in which case the change in speed will be (i) minimum, (ii) maximum? -Physics

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Last Answer : (i) Minimum change is seen as light moves between 1.50 and 1.52, i.e. B and C. (ii) Maximum change when light moves between 1.33 and 2.40, i.e. A and D.

If nothing travels at the speed of light, except light, how can a black hole also pull light into itself? -Space

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Last Answer : This bending of the light rays increases as the strength of the gravitational field increases. A black hole is simply a region where the effect on light is so great that light cannot escape the region.

Total internal reflection can take place when light travels from which thing? -Do You Know?

Description : Total internal reflection can take place when light travels from which thing? -Do You Know?

Last Answer : answer:

Is it true that Light travels faster in a material with a higher index of refraction?

Description : Is it true that Light travels faster in a material with a higher index of refraction?

Last Answer : Its False

What does not happen when light travels from water into air?

Description : What does not happen when light travels from water into air?

Last Answer : The following are some things that do not happen:The water decomposes into hydrogen and oxygen.The air gets sucked into the water, forming a whirlpool.The hydrogen in the water fuses, producing ... hydrogen in the water forming ammonia gas.The surface of the water becomes electrically charged.etc.

What is the speed at at which light travels?

Description : What is the speed at at which light travels?

Last Answer : Light travels at 186,000 miles per second.

Light waves are different from sound waves in that 1. Light waves are electromagnetic but sound waves are not 2. Light waves can travel through water but sound waves cannot 3. Light travels with the same speed in all media 4. Light waves produce interference but sound waves do not 5. Light can travel through vacuum but sound cannot Which of the above statements is/are correct? (a) 1 and 5 (b) 2 and 3 (c) 3 and 4 (d) 1 and 4

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Last Answer : Ans:(a)

Critical reflection will take place if light travels from (a) Air to water (b) Glass to air (c) Water to glass (d) Air to glass

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The characteristic invalid for heat radiation is that it travels – (1) in a straight line (2) in all directions (3) with the speed of light (4) heating the medium through which it passes

Description : The characteristic invalid for heat radiation is that it travels – (1) in a straight line (2) in all directions (3) with the speed of light (4) heating the medium through which it passes

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Which of these travels in glass with minimum velocity? (1) red light (2) violet light (3) green light (4) yellow light

Description : Which of these travels in glass with minimum velocity? (1) red light (2) violet light (3) green light (4) yellow light

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The bending of light when a ray of light travels from one medium to another is called.?

Description : The bending of light when a ray of light travels from one medium to another is called.?

Last Answer : Refraction