491936 - Running head FIBER OPTIC 1 Fiber optic(Authors...

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Running head: FIBER OPTIC 1 Fiber optic (Author’s name) (Institutional Affiliation)
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FIBER OPTIC 2 II) Communication Systems Used In Avionics (Rise, types, and development) i. History of development of communication systems in avionics The invention of telegraphy and telephony is one of the most significance inventions to communication (James, 2013). This was made possible by the design of an electric battery by Volta in1799 which lead to the rise of an electric telegraph in 1837 by Morse. Morse developed binary digital communication systems in which English alphabets were encoded into binary elements having corresponding variable length code words (John, 2012). This was later developed into fixed code binary words of five. The significant aspect of telephony was the installation of the first transatlantic cable which link Europe and United States (James, 2013). Telephony was overturned in 1887 due to the development of the telephone. The development proceeds in early 20 th century by the development of carbon microphone and the induction coil (James, 2013). The electromechanical switch was the earliest switch used which was later displaced by the invention of the automatic switching. Through several years of development, a digital switch was made in service in Illinois by 1960 (John, 2012).thre has been significant development of communications during the past thirty years. The discovery of vacuum node by Fleming leads to the development of amplitude modulation which later lead to the development of frequency modulation .this were among the first communication systems used in avionics (James, 2013). Optic fibers have increasingly replaced copper cables in telephone plants and electronic switches replacing electromechanically systems (John, 2012). ii. Types of communication system a) Standard coaxial cable systems This involves the use of inner conductor usually copper solid, copper plated or stranded copper enclosed in a shield and surrounded by insulating layer to conduct electrical signals (Liwei,
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FIBER OPTIC 3 2012). The electrical signals travel through this conductor which require two wires, the go cable, and the return wire.In most cases, these wires are exposed openly to environment thus affected by harsh conditions.in multi-pair cables the cross talk can occur where other wire transmitting
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  • Fall '14
  • Fiber Optics, John Lee

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