Sean Braun Assignment 9 There are two main types of fibre optic transmitter that are in use today. Both of them are based around semiconductor technology: • Light emitting diodes (LEDs) • Laser diodes Semiconductor optical transmitters have many advantages. They are small‚ convenient‚ and reliable. However‚ the two different types of fibre optic transmitter have very different properties and they tend to be used in widely different applications. LED transmitters These fibre optic transmitters
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step index fiber It is an optical fiber which has a core of constant refractive index.there are two types of step index fibers:single mode si and multi mode si fiber single mode step index fiber has only one mode of EM propagation (HE11) an has a core diameter of about 8-12 Um. and multi mode si has many mode of propagation and has a core of diameter of about 50 Um which allow many no of modes through it. single mode step index has an adv of lower inter modal dispersion as there is only
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spreading of a light pulse as it travels down a fiber when light pulses launched close together(high data rates) spread too much and result in errors and a loss of information. The spectral width determines the number of different wavelengths that are emitted from LED or laser. One way to reduce chromatic dispersion is to narrow the spectral width of the transmitter. Chromatic dispersion can be compensated for with the use of dispersion-shifted fiber (DSF). Laser has a more narrow spectral width
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basic elements of a Fiber-Optic communication system • A fiber optic transmission strand that can carry the signal. • A source of invisible infrared radiation modulated to impress digital data or an analog signal on the light beam. • A photosensitive detector to convert the optical signal back into an electrical signal at the receiver. • Optical connectors at the light source-to-cable interface and at the cable-to-photo detector interface. 2. List Five advantages of an optical communications link
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OPTICAL AMPLIFIERS IN OPTICAL COMMUNICATION SYSTEM Arminder kaur1‚ Upneet Kaur2‚ Gaurav soni3 1‚2M.Tech Scholar (ECE)‚ Amritsar College of Engg. &Technology‚ Amritsar‚ Punjab‚ India. 3Associate Professor‚ Deptt. of ECE‚ Amritsar College of Engg. & Technology‚ Amritsar‚ Punjab‚ India. ABSTRACT: This paper reviews several technologies of optical amplifiers with their applications and we focus on the recent progress in some important aspects of several optical fiber amplifier technology
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military/aerospace platform operational environment challenges the creativity of fiber optic module packaging engineers as they endeavor to develop and mature new active and passive single-mode fiber optic and photonic components for next generation avionics networking applications. Low sales and manufacturing volumes inherent to avionics combined with lack of standard interface specifications for current and next generation fiber optic local area network architectures and sub-systems makes it difficult
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OPTICAL PACKET SWITCHING Kunal K Mehta(11BEC107) Electronics and communication branch Institute of Technology‚ Nirma University Ahmedabad 11bec107@nirmauni.ac.in Abstract: Optical packet switching promises to bring the flexibility and efficiency of Internet to transparent optical networking technology with bit rate extending beyond that is currently available with electronic router technologies. New optical signal processing have been demonstrated that enable routing at bit rates from
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.A. Edison’s ’phonograph. Since the development of optical fibres ’photo phones’ and ’phonographs’ are no longer used or needed. Optical fibres have many advantages; they enable the sound messages to carry for 50km without any need for a repeater unlike other optical communication systems‚ which need repeaters at 1km intervals. Optical fibres have replaced other methods of communication for many reasons‚ some listed below. *Capacity Optical fibres can carry signals with much less energy than
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systems. Particularly‚ optical fiber communication plays a vital role in the development of high quality and high-speed telecommunication systems. Today‚ optical fibers are not only used in telecommunication links but also used in the Internet and Local area networks (LAN) to achieve high signaling rates. What is 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
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Copper vs Fiber Some advantages of Copper Cabling are Power over Ethernet this gives you the ability to power phones‚ surveillance cameras‚ Wireless Access Points‚ and many other devices right through the networking cable itself. That means that you don’t have to schedule an electrician in to run power to your surveillance cameras to power them. Another advantage is the ability to have an emergency power supply that will continue powering mission critical devices even if your electricity goes
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