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Topic: Fiber optics


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In the News (Sun 16 Jun 19)

  
  Optical fiber - Wikipedia, the free encyclopedia
By the waveguide analysis, it is seen that the light energy in the fiber is not completely confined in the core, but, especially in single-mode fibers, a significant fraction of the energy in the bound mode travels in the cladding as an evanescent wave.
Fibers are generally used in pairs, with one fiber of the pair carrying a signal in each direction, however bidirectional communications is possible over one strand by using two different wavelengths (colors) and appropriate coupling/splitting devices.
Fibers can be used as light guides in medical and other applications where bright light needs to be brought to bear on a target without a clear line-of-sight path.
en.wikipedia.org /wiki/Fiber_optics   (2012 words)

  
 Introduction to Fiber Optics Part 1 (including video transmission for a/v)
Fiber optic cable is similar to electrical cable in its construction, but provides special protection for the optical fiber within.
Fiber optic cables are virtually unaffected by outdoor atmospheric conditions, allowing them to be lashed directly to telephone poles or existing electrical cables without concern for extraneous signal pickup.
Fiber optic cable is ideal for secure communications systems because it is very difficult to tap but very easy to monitor.
www.commspecial.com /fiberguide.htm   (717 words)

  
 AllRefer.com - fiber optics (Electrical Engineering) - Encyclopedia
Each fiber is surrounded by a cladding having a high index of refractance so that the light is internally reflected and travels the length of the fiber without escaping.
Cables of optical fibers can be made smaller and lighter than conventional cables using copper wires or coaxial tubes, yet they can carry much more information, making them useful for transmitting large amounts of data between computers and for carrying data-intensive television pictures or many simultaneous phone conversations.
Optical fibers are immune to electromagnetic interference (from lightning, nearby electric motors, and similar sources) and to crosstalk from adjoining wires, and tapping into them is more easily detected.
reference.allrefer.com /encyclopedia/F/fiberopt.html   (284 words)

  
 Fiber Optic Cable Tutorial
Fiber optic cable functions as a "light guide," guiding the light introduced at one end of the cable through to the other end.
Fiber optic cable connectors and the equipment needed to install them are still more expensive than their copper counterparts.
Hair-thin fibers consist of two concentric layers of high-purity silica glass the core and the cladding, which are enclosed by a protective sheath.
www.arcelect.com /fibercable.htm   (3255 words)

  
 A Brief History of Fiber Optic Technology
The innermost region of the fiber, or core, was used to transmit the light, while the glass coating, or cladding, prevented the light from leaking out of the core by reflecting the light within the boundaries of the core.
The early work on fiber optic light source and detector was slow and often had to borrow technology developed for other reasons.
Fiber optics developed over the years in a series of generations that can be closely tied to wavelength.
www.fiber-optics.info /fiber-history.htm   (2006 words)

  
 Fiber Optics
Before fiber optics came along, the primary means of communicating data was in the form of electronic signals transmitted on copper wire, or electromagnetic radio waves that traveled through the air.
Fiber optic technology is based on the use of light energy to transmit data.
Thus, when a fiber optic cable, which consists of a glass or plastic core surrounded by a cladding with a lower refractive index, receives a light ray, the light ray is confined and travels down the core to the receiving end.
www.comtest.com /tutorials/fiber.html   (1726 words)

  
 The educational encyclopedia, cabling, fibers, fiber optics   (Site not responding. Last check: 2007-10-07)
Fibre optics optical Fibres are fibres of glass, usually about 120 micrometres in diameter, which are used to carry signals in the form of pulses of light over distances up to 50 km without the need for repeaters.
Fiber optics fiber optics is a medium for carrying information from one point to another in the form of light.
Fiber optics tutorial optical fibers are circular dielectric waveguides that can transport optical energy and information, fibers are typically made of silica with index-modifying dopants.
users.telenet.be /educypedia/electronics/cablingfibers.htm   (537 words)

  
 About Fiber Optics - History, Facts, Hardware, Links, and more
Fiber Optic (also spelled Fibre Optic) technology is a cutting edge method of transmitting information over great distances (100 km without using a repeater) using pulses of light.
Fiber optics is currently the best long distance communications method because it provides much faster data transfer speeds when compared to traditional interconnection media such as copper wire.
Fiber Optic Cables are ideal for volatile environments because there is no fear of damage should they break like there is with traditional copper wiring.
www.aboutfiberoptics.com   (184 words)

  
 What is fiber optics? - A Word Definition From the Webopedia Computer Dictionary   (Site not responding. Last check: 2007-10-07)
A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.
Fiber optic cables are less susceptible than metal cables to interference.
Fiber optics is a particularly popular technology for local-area networks.
www.webopedia.com /TERM/f/fiber_optics.html   (532 words)

  
 ITS Projects: Fiber Optics Basics   (Site not responding. Last check: 2007-10-07)
The optic core is the light carrying element at the center of the optical fiber.
The greater the bandwidth, the greater the carrying capacity of the optical fiber (Tariyal, 1992, p.
Fiber optics will play a pivotal role in this race since the bandwidth needed for providing an all-in-one service with television, telephone, interactive multimedia, and internet access is not available in much of the wiring of America.
www.tcomschool.ohiou.edu /its_pgs/fiber.html   (2722 words)

  
 Fiber Optics
Fiber optics is also an important part of the Internet’s infrastructure.
Modern fiber optic cables used for communications networks are the result of many decades of experimentation by scientists from around the world.
The FOA (Fiber Optic Association) is a non-profit organization dedicated to educational programs, the certification of fiber optics technicians, and the promotion of this technology in general.
www.infoweblinks.com /content/fiberoptics.htm   (559 words)

  
 Howstuffworks "How does a fiber optic cable work?"
That is the essence of a fiber optic cable.
To send telephone conversations through a fiber optic cable, analog voice signals are translated into digital signals (see How analog and digital recording works for details).
Modern fiber systems with a single laser can transmit billions of bits per second -- the laser can turn on and off several billions of times per second.
www.howstuffworks.com /question402.htm   (576 words)

  
 Fiber Optics   (Site not responding. Last check: 2007-10-07)
Fiber optics is a system which transmits signals from one location to another through a thin strand of glass which carries light pulses to carry data.
Both copper and optics use electricity at the end of their lines, but optics uses light in between to carry the data.
A normal glass fiber is composed of 60% CORE and 40% CLAD, and has a diameter of 0.001 to 0.003 inches.
www.calpoly.edu /~cm/studpage/lmccrea/fiberoptics.html   (535 words)

  
 fiber optic training
RWM Fiber Optics is approved for veterans that will pay for 60% of the tuition.
Fiber optic training is provided for Private, Rehabilitation, WIA students and Industry.
RWM Fiber Optics received an exemplary award by the South Bay Workforce Investment Board for 100% placement performance and has received Congressional and Local awards from the City of Glendale.
www.rwm.org /rwm/fib.shtml   (406 words)

  
 Fiber Optics Signs and Fiber Optic Accent Lighting
Large core fiber optics for signs allow the transmission of light for display purposes.
Fiber optics can be used as side glow for showing long strands of color.
Fiber Optic technology gives us up to sixteen changing colors, automatically changing from one to another.
www.wagnersign.com /fiberoptics.htm   (318 words)

  
 Fiber Optic History
However, the unclad fibers transmitted images poorly, and the rise of the Nazis forced Lamm, a Jew, to move to America and abandon his dreams of becoming a professor of medicine.
However virtually everyone considered fibers too lossy for communications; attenuation of a decibel per meter was fine for looking inside the body, but communications operated over much longer distances, and required loss no more than 10 or 20 decibels per kilometer.
Development of hardware for the first transatlantic fiber cable showed that single-mode systems were feasible, so when deregulation opened the long-distance phone market in the early 1980s, the carriers built national backbone systems of single-mode fiber with 1300-nm sources.
www.sff.net /people/Jeff.Hecht/history.html   (2322 words)

  
 Lennie Lightwave's Guide To Fiber Optics - Basics
Fiber optics, you see, is not all the same.
The fiber is mostly multimode, except for the enlightened user who installs hybrid cable with both multimode and singlemode fibers.
Fiber optic splicing and termination use various chemical adhesives and cleaners as part of the processes.
www.jimhayes.com /lennielw/basics.html   (1917 words)

  
 Fiber Optic Supplier, Fiber Instrument Sales, FIS, OTDRs, Fusion Splicers, Patch Cords
We are also a distributor of fiber optic products from other top companies.
For 20 years, Fiber Instrument Sales has served the needs of all segments of the fiber optics industry, including telecommunications, contractors, resellers/distributors, researchers, government and education.
We offer same day shipping on most items, and our fiber optic experts are always available to answer any questions you may have.
www.fisfiber.com   (285 words)

  
 Fiber Optics Online News fiber optic industry professionals
Fiber endface inspection is made easy with the new 250X/400X toggle feature, allowing the user to quickly change the OptiFiber setup to match the setting of the dual-magnification video probe.
Individual fibers can be compared to a reference trace stored at an earlier time.
OptiFiber is the OTDR of choice for premises fiber networks due to its precise accuracy and short event deadzones.
www.fiberopticsonline.com /content/news/article.asp?docid={00C452B9-42AD-4B38-A83E-37E943CAE76D}&VNETCOOKIE=NO   (592 words)

  
 Fiber Optics
Fiber optic cables create the link with system components.
Light industrial cables are designed to protect long lengths of Low OH Silica and have thermoplastic jacketing with fiber strengthening members and SMA connectors.
Process cables have fiber optics that are sealed in an inner stainless steel cable and is encased in a PTFE liner surrounded by a stainless steel braid with hermetically-sealed process connectors.
www.reflexusa.com /fibopcab.html   (155 words)

  
 Amazon.com: Books: Introduction to Fiber Optics   (Site not responding. Last check: 2007-10-07)
Whether you are looking for a complete self-study course in fiber optics, a concise reference text to dip into or a course text that is readable and straightforward, John Crisp has the solution.
The reader is left faced with an undesirable trait of fibers without sufficient explanation of the eigen values or transmission theory.
As a synthetic organic chemist with no previous knowledge of fiber optics, I found this book to be very readable and an excellent introduction to the subject.
www.amazon.com /exec/obidos/tg/detail/-/0750624671?v=glance   (1040 words)

  
 A Taylor & Francis Journal: Fiber and Integrated Optics
Fiber and Integrated Optics, now incorporating The International Journal of Optoelectronics, is an international bimonthly journal that disseminates significant developments and in-depth surveys in the fields of fiber and integrated optics.
The journal is unique in bridging the major disciplines relevant to optical fibers and electro-optical devices.
For more than a decade, Fiber and Integrated Optics has been a valuable forum for scientists, engineers, manufacturers, and the business community to exchange and discuss techno-economic advances in the field.
www.tandf.co.uk /journals/tf/01468030.html   (202 words)

  
 Fiber::Optic::Compontents::Gould
Considered the pioneer in Fiber Optic Research and Development, Gould celebrates its 20th year of designing and manufacturing high performance, state-of-the-art fiber optic components.
Gould Fiber Optics is a leading worldwide manufacturer and supplier of premium passive fiber optic components and specializes in fully tested integrated solutions.
Gould fiber optic couplers make your application more reliable because they perform very well in all kinds of conditions.
www.gouldfo.com   (141 words)

  
 Fiber Optics Publications
The Fiber Optics Reprint Series includes papers presented at IGI's internationally recognized FOC/LAN, EFOC/LAN, Broadband, POF, ISFOC and MFOC trade shows as well as papers published in "Fiber Optics Magazine." These volumes are unrivaled as informative surveys of historical and state-of-the-art developments in 41 segments of the fiber optics industry.
A study of fiber optic transmission technology for fixed and drag-on STS payload umbilicals.
The objective of this manual is to evaluate the technical and economic feasibility of using fiber optic technology for underground coal mine communications systems.
www.igigroup.com /pub/reportseries/fopub.html   (1297 words)

  
 Fiber Optics And Fiber Optic Components - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-10-07)
Fiber Optics And Fiber Optic Components - Encyclopedia.WorldSearch
Optical Fiber Sensors, Volume III: Components and Subsystems
Components for Fiber Optic Applications III and Coherent Lightwave Communications/7-9 September 1988 Boston, Massachusetts (Spie Proceedings Series,)
encyclopedia.worldsearch.com /fiber_optics_and_fiber_optic_components.htm   (122 words)

  
 Course Technology--InfoWeb: Fiber Optics
For additional information, visit Lascomm Fiber Optic Data and Video Communications at www.lascomm.com/toc.htm, which has tutorials on fiber-optic cables, articles on a variety of fiber-optic topics, a glossary of industry terms, and case stories of innovative uses of fiber optics.
For a discussion of how sound is transmitted over fiber-optic cables, the history of fiber-optics in telecommunications, and a description of how fiber-optic cables work, visit www.att.com/technology/forstudents/brainspin/fiberoptics.
ZBLAN fibers are suitable for use in advanced communications applications, medical lasers, and manufacturing lasers.
www.cciw.com /content/fiber_optics.html   (253 words)

  
 The Fundamentals of Optics   (Site not responding. Last check: 2007-10-07)
Physical optics is concerned with the creation, nature, and properties of light.
Geometrical optics deals with the properties of reflection and refraction of light, as part of the study of mirrors, lenses, and optical fibers.
As you can see from the dictionary definition above, the study of optics falls into three general categories: light itself, what it is and how it behaves; How we perceive light through the sense of sight; and how light can be manipulated through such processes as reflection and refraction.
www.play-hookey.com /optics   (387 words)

  
 Fusion Splicer, OTDR and Other Fiber Optic Test Equipment at FiberOptic.com
TYPE-25U is the only product among the ultra-compact fiber optic fusion splicers for FTTH application that allows splice-loss estimation through bidirectional observation.
An OTDR was used to measure the length and loss of a spool of multimode LAN fiber.
Because OTDRs have been used with utility since the origin of fiber optics, they have become the de facto standard for testing newly installed and restored fiber optic systems.
www.fiberoptic.com   (986 words)

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