Max Haney NT1310 Physical Networking Unit 10 Assignments 11/18/2014 Physical Networking Unit 10 Assignments Unit 10 Assignment 1 Fiber-Optic Installation – Conduit is pipe. It can be metallic‚ nonmetallic‚ flexible‚ or rigid(depending upon local codes) and runs from a work area to a telecommunications room to the equipment room. One advantage of using conduit to hold the cables is that conduit may already exist in the building. A drawback to conduit is that it provides a finite amount of space
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connects to the main cable run. 4. Connectors- A device attached to the end of a cable‚ receiver‚ or light source that joins it with another cable‚ device or fiber. A connector is a mechanical device used to align and join two conductors or fibers together to provide a means for attaching and decoupling it to a transmitter‚ receiver‚ or another fiber. 5. Conduit- A rigid or flexible metallic or nonmetallic raceway of circular cross section in which cables are housed for protection and to prevent burning
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The adaptation of natural fiber composites in the consumer industry has not had the same explosive growth as with the transportation or even the construction industry. The benefits of cost savings and weight reduction that can be obtained with natural fiber composites played a significant role for the proliferation into those respective industries. But in the consumer market‚ stemming from the rise of synthetic fibers starting in the 1940’s‚ glass fiber and carbon fibers have dominated the market
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Technology over the past century has advanced greatly. Fibre optics however is being utilized since more than a hundred years. Optical fibre is a model that has evolved greatly over time. From guided transmission lights experiments to lasers and light emitting diodes (LED)‚ and to dense wavelength-division multiplexing (DWDM)‚ the area under which optical fibre can be used has expanded. One of the modern and commonly used applications of fibre optics is high resolution visuals (HDTV) which
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run. Connectors- With respect to cabling‚ a device attached to the end of a cable‚ receiver‚ or light source that joins it with another cable‚ device or fiber. A connector is a mechanical device used to align and join two conductors or fibers together to provide a means for attaching and decoupling it to a transmitter‚ receiver‚ or another fiber. Conduit- A rigid or flexible metallic or nonmetallic raceway of circular cross section in which cables are housed for protection and to prevent burning cable
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CHAPTER 4 TRANSMISSION MEDIA 4.1 Guided Transmission Media Twisted Pair Coaxial Cable Optical Fiber 4.2 Wireless Transmission Antennas Terrestrial Microwave Satellite Microwave Broadcast Radio Infrared 4.3 Wireless Propagation Ground Wave Propagation Sky Wave Propagation Line-of-Sight Propagation 4.4 Line-of-Sight Transmission Free Space Loss Atmospheric Absorption Multipath Refraction 4.5 4.6 Recommended Reading and Web Sites Key Terms‚ Review Questions‚ and Problems Key Terms Review Questions
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media lie below the physical layer. We can evaluate transmission media by throughput‚ propagation speed‚ and propagation time. * A guided medium provides a physical conduit from one device to another. Twisted-pair cable‚ coaxial cable‚ and optical fiber are the most popular types of guided media. Twisted-pair cable consists of two insulated copper wires twisted together. Twisting allows each wire to have approximately the same noise environment. Twisted-pair cable is used in telephone lines
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fibre optic telecommunications‚ wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fibre by using different wavelengths (colors) of laser light to carry different signals. This allows for a multiplication in capacity‚ in addition to making it possible to perform bidirectional communications over one strand of fiber. (Tomlinson & Lin‚ 2000‚ p.345-347) 1.2 Systems involve in Wavelength-division Multiplexing technology A WDM
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surrounded by a twisted braid‚ foil or both and bound in a single plastic sheath containing balanced twisted-pair conductors that are individually shielded. Fiber-optic Cable- is a cable made up of optical fibers that can transmit large amounts of information at the speed of light. Dark Fiber- is an unused optical fiber available for use in fiber-optic communication. Coaxial Cable- a cable that consists of a center wire surrounded by insulation and then a grounded shield of braided wire. Plenum-
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March 31‚ 2013 (before 11: 55 pm): 1.Differentiate between guided media and unguided media 2.What are three important characteristics of a periodic signal 3.Define funamental frequency 4.What is attenuation? 5.Describe the components of optical fiber cable. 6.Indicate some significant differences between broadcast radio and microwave. 7.What is the difference between diffraction and scattering? 8.List and briefly define important factors that can be used in evaluating or comparing the various
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