Developed an optical fiber with losses less that 2 dB/km ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Maiman and Schawlow ∙ D. Kapron, Keck and Maurer

Developed an optical fiber with losses less that 2 dB/km
∙ A. Kao and Bockham
∙ B. Maiman, Kao and Bockham
∙ C. Maiman and Schawlow
∙ D. Kapron, Keck and Maurer
by

1 Answer

Answer :

∙ A. Kao and Bockham
by

Related questions

They proposed a new communication medium using cladded fiber cables. ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Kapron, Keck and Maurer ∙ D. Maiman and Schawlow

Description : They proposed a new communication medium using cladded fiber cables. ∙ A. Kao and Bockham ∙ B. Maiman, Kao and Bockham ∙ C. Kapron, Keck and Maurer ∙ D. Maiman and Schawlow

Last Answer : ∙ A. Kao and Bockham

They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Last Answer : C. Charles Townes and Arthur Schawlow

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

Description : 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

Last Answer : D. Van Heel, Hopkins and Kapany

They were granted patents for scanning and transmitting television images through uncoated fiber cables. ∙ A. Baird and Hansel ∙ B. Bockham and Kao ∙ C. Kapron and Keck

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He coined the term “fiber optics” in 1956. ∙ A. Kapany ∙ B. Kao ∙ C. Bockham ∙ D. Keck

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Last Answer : ∙ A. Kapany

Proposed the use of clad glass fiber as a dielectric waveguide a. Karpon and Keck b. Karpon and Bockham c. Bockham and Kao d. Kao and Keck

Description : Proposed the use of clad glass fiber as a dielectric waveguide a. Karpon and Keck b. Karpon and Bockham c. Bockham and Kao d. Kao and Keck

Last Answer : c. Bockham and Kao

The scientist who built the first optical maser ∙ A. Charles Townes ∙ B. GA Bockham ∙ C. Theodore Maiman ∙ D. ACS Van Heel

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Proposed the use of clad glass fiber as a dielectric waveguide a. Karpon and Keck b. Karpon and Bockham c. Bockham and Kao d. Kao and Keck

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Proposed the use of a clad glass fiber as a dielectric waveguide. A. Kao and Keck B. Karpon and Keck C. Karpon and Bockham D. Bockham and Kao

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Last Answer : D. Bockham and Kao

For a single mode optical cable with 0.25 dB/km loss, determine the optical power 100 km from a 0.1-mW light source. ∙ A. -45 dBm ∙ B. -15 dBm ∙ C. -35 dBm

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Developed an optical fiber with losses less that 2 dB/km

Description : Developed an optical fiber with losses less that 2 dB/km

Last Answer : Kao and Bockham

A fiber-optic cable has a loss of 15 dB/km. The attenuation in a cable 1000 ft. long is ∙ A. 4.57 dB ∙ B. 9.3 dB ∙ C. 24 dB ∙ D. 49.2 dB

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Last Answer : A. 4.57 dB

. A fiber-optic cable has a loss of 15 dB/km. The attenuation in a cable, 100 ft long is ∙ a. 4.57 dB ∙ b. 9.3 dB ∙ c. 24 dB ∙ d. 49.2 dB

Description : . A fiber-optic cable has a loss of 15 dB/km. The attenuation in a cable, 100 ft long is ∙ a. 4.57 dB ∙ b. 9.3 dB ∙ c. 24 dB ∙ d. 49.2 dB

Last Answer : ∙ a. 4.57 dB

For a 300-m optical fiber cable with a bandwidth distance product of 600 MHz-km, determine the bandwidth. ∙ A. 5 GHz ∙ B. 1 GHz ∙ C. 2 GHz

Description : For a 300-m optical fiber cable with a bandwidth distance product of 600 MHz-km, determine the bandwidth. ∙ A. 5 GHz ∙ B. 1 GHz ∙ C. 2 GHz

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Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of ∙ A. loss per foot ∙ B. dB/km ∙ C. intensity per mile ∙ D. voltage drop per inch

Last Answer : . dB/km

Cable attenuation is usually expressed in terms of ∙ a. Loss per foot ∙ b. dB/km ∙ c. intensity per mile ∙ d. voltage drop per inch

Description : Cable attenuation is usually expressed in terms of ∙ a. Loss per foot ∙ b. dB/km ∙ c. intensity per mile ∙ d. voltage drop per inch

Last Answer : ∙ b. dB/km

Fiber-optic cables with attenuation of 1.8, 3.4, 5.9 and 18 dB are linked together. The total loss is ∙ A. 7.5 dB ∙ B. 19.8 dB ∙ C. 29.1 dB ∙ D. 650 dB

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Last Answer : C. 29.1 dB

What is the average loss in fiber splice? ∙ a. 0.10 dB ∙ b. 0.15 dB ∙ c. 0.20 dB ∙ d. 0.25 dB

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Fiber-optic cables with attenuations of 1.8, 3.4, 5.9, and 18 dB are linked together. The total loss is ∙ a. 7.5 dB ∙ b. 19.8 dB ∙ c. 29.1 dB ∙ d. 650 dB

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What is the insertion loss of connector-type splices for a single mode fiber optics? ∙ a. 0.51 dB ∙ b. 0.31 dB ∙ c. 0.49 dB ∙ d. 0.38 dB

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What is the average insertion loss of fusion splice in fiber optics? ∙ a. 0.09 dB ∙ b. 0.9 dB ∙ c. 0.19 dB ∙ d. 0.009 dB

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The term power budgeting refers to ∙ A. the cost of cable, connectors, equipment and installation ∙ B. the loss of power due to defective components ∙ C. the total power available minus the attenuation losses ∙ D. the comparative costs of fiber and copper installations

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When connector losses, splice losses and coupler losses are added, what is the limiting factor? ∙ A. source power ∙ B. fiber attenuation ∙ C. connector and splice loss ∙ D. detector sensitivity

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The dominant loss mechanisms in silica fiber are ∙ a. Absorption and radiation losses ∙ b. Absorption and Rayleigh scattering ∙ c. Coupling and radiation losses ∙ d. Radiation and modal dispersion

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Why are visible-light LEDs not used for fiber optics? ∙ a. It has high losses ∙ b. It has short wave ∙ c. It has low attenuation ∙ d. It has weak signal

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Developed the first laser a. Charles Townes b. Theodore Maiman c. Gordon McKenzie d. Albert Einstein

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Light rays that are emitted simultaneously from an LED and propagated down an optical fiber do not arrive at the far end of the fiber at the same time results to ∙ A. intramodal dispersion ∙ B. pulse length dispersion ∙ C. modal dispersion ∙ D. wavelength dispersion

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A type of index of an optical fiber that has no cladding and whose central core has a non-uniform refractive index. ∙ A. graded index ∙ B. multimode ∙ C. single mode ∙ D. step-index

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A type of index profile of an optical fiber that has a central core and outside cladding with a uniform refractive index ∙ A. multimode ∙ B. graded index ∙ C. step-index ∙ D. single mode

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Approximately what is the frequency limit of the optical fiber? ∙ A. 20 MHz ∙ B. 1 MHz ∙ C. 100 MHz ∙ D. 40 GHz

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Used to test a fiber optics splice ∙ a. Spectrum analyzer ∙ b. Oscilloscope ∙ c. Optical power meter ∙ d. Field strength meter

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What is the frequency limit of an optical fiber? ∙ a. 20 GHz ∙ b. 30 GHz ∙ c. 40 GHz ∙ d. 50 GHz

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Light traveling in optical fiber follows which of the following principles. ∙ a. Huygen’s principle ∙ b. Reflection theory ∙ c. Light theory ∙ d. Snell’s law

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Optical cable testers are used for ∙ a. Checking refractive index ∙ b. Light power out of a fiber ∙ c. Non-calibrated light into a fiber

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Optical cable testers are used for ∙ a. Checking refractive index ∙ b. Light power out of a fiber ∙ c. Non-calibrated light into a fiber

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Which is not a possible cause of optical fiber loss? ∙ a. Impurities ∙ b. Glass attenuation ∙ c. Stepped index operation ∙ d. Microbending

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The graded-index multimode optical fiber has a core diameter of _____ nm. ∙ a. 0.5 ∙ b. 0.05 ∙ c. 0.0005 ∙ d. 5

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A step-index multimode optical fiber has a core diameter of _____ nm. ∙ a. 0.02 ∙ b. 0.2 ∙ c. 2 ∙ d. 0.002

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A single mode optical fiber has a core diameter of _____ nm. ∙ a. 0.1 ∙ b. 0.01 ∙ c. 0.2 ∙ d. 0.05

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SONET stands for ∙ a. System Optical Network ∙ b. Synchronous Optical Network ∙ c. Silica Optic Network ∙ d. System Optical Fiber Net

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Which of the following is used as an optical receiver in fiber optics communications ∙ a. APD ∙ b. Tunnel diode ∙ c. Laser diode ∙ d. LED

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What is a specific path the light takes in an optical fiber corresponding to a certain angle and number of reflection ∙ a. Mode ∙ b. Grade ∙ c. Numerical Aperture ∙ d. Dispersion

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The bandwidth of optical fiber ∙ a. 900M Hz ∙ b. 900 PHz ∙ c. 900 THz ∙ d. 900 EHz

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Is the different angle of entry of light into an optical fiber when the diameter of the core is many times the wavelength of the light transmitted. ∙ a. Acceptance angle ∙ b. Modes ∙ c. Sensors ∙ d. Aperture

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The core of an optical fiber has a ∙ a. Lower refracted index than air ∙ b. Lower refractive index than the cladding ∙ c. Higher refractive index than the cladding ∙ d. Similar refractive index with the cladding

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. The product of the bit rate and distance of a fiber-optic system is 2 Gbits-km/s. What is the maximum rate at 5 km? ∙ A. 100 Mbits/s ∙ B. 200 Mbits/s ∙ C. 400 Mbits/s ∙ D. 1000 Gbits/s

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The product of the bit rate and distance of a fiber-optic system is 2 Gbits km/s. What is the maximum rate at 5 km? ∙ a. 100 Mbits/s ∙ b. 200 Mbits/s ∙ c. 400 Mbits/s ∙ d. 1000 Gbits/s

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Last Answer : c. 400 Mbits/s