翻訳と辞書 Words near each other ・ Fiber optic splitter ・ Fiber optical thermometer ・ Fiber pull-out ・ Fiber pushout test ・ Fiber roll ・ Fiber rope ・ Fiber simulation ・ Fiber tapping ・ Fiber to the premises by country ・ Fiber to the premises in the United States ・ Fiber to the telecom enclosure ・ Fiber to the x ・ Fiber Twig ・ Fiber type ・ Fiber volume ratio ・ Fiber-optic communication ・ Fiber-optic Improved Next-generation Doppler Search for Exo-Earths ・ Fiber-optic inter-repeater link ・ Fiber-Optic Link Around the Globe ・ Fiber-reinforced composite ・ Fiber-reinforced concrete ・ Fibera KK-1e Utu ・ Fiberboard ・ Fibered knot ・ Fibered manifold ・ Fiberfab ・ Fiberfab Avenger GT ・ Fiberfab Valkyrie ・ Fiberforge ・ Fiberglas Tower Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Fiber-optic communication ： ウィキペディア英語版 Fiber-optic communication Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. The light forms an electromagnetic carrier wave that is modulated to carry information. First developed in the 1970s, fiber-optic communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. Because of its advantages over electrical transmission, optical fibers have largely replaced copper wire communications in core networks in the developed world. Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Researchers at Bell Labs have reached internet speeds of over 100 petabit×kilometer per second using fiber-optic communication.〔(Bell Labs breaks optical transmission record, 100 Petabit per second kilometer barrier ), Phys.org, 29 September 2009〕 The process of communicating using fiber-optics involves the following basic steps: Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal. == Applications == Optical fiber is used by many telecommunications companies to transmit telephone signals, Internet communication, and cable television signals. Due to much lower attenuation and interference, optical fiber has large advantages over existing copper wire in long-distance and high-demand applications. However, infrastructure development within cities was relatively difficult and time-consuming, and fiber-optic systems were complex and expensive to install and operate. Due to these difficulties, fiber-optic communication systems have primarily been installed in long-distance applications, where they can be used to their full transmission capacity, offsetting the increased cost. Since 2000, the prices for fiber-optic communications have dropped considerably. The price for rolling out fiber to the home has currently become more cost-effective than that of rolling out a copper based network. Prices have dropped to $850 per subscriber in the US and lower in countries like The Netherlands, where digging costs are low and housing density is high. Since 1990, when optical-amplification systems became commercially available, the telecommunications industry has laid a vast network of intercity and transoceanic fiber communication lines. By 2002, an intercontinental network of 250,000 km of submarine communications cable with a capacity of 2.56 Tb/s was completed, and although specific network capacities are privileged information, telecommunications investment reports indicate that network capacity has increased dramatically since 2004. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fiber-optic communication」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.