Fiber Optics Paper

498 Words2 Pages
1. Describe the electromagnetic spectrum; make sure you discuss the patterns that occur with frequency and wavelength, as well as the different types of EM waves. Fiber optic data transmission systems send information over fiber by turning electronic signals into light. Light refers to more than the portion of the electromagnetic spectrum that is near to what is visible to the human eye. The electromagnetic spectrum is composed of visible and Near infrared light like that transmitted by fiber, and all other wavelengths used to transmit signals such as AM and FM radio and television. The electromagnetic spectrum. Only a very small part of it is perceived by the human eye as light. 2. Discuss the wavelength, frequency, and energy of this type of wave. For fiber optics with glass fibers, we use light in the infrared region which has wavelengths longer than visible light, typically around 850, 1300 and 1550 nm. Why do we use the infrared? Because the attenuation of the fiber is much less at those wavelengths. The attenuation of glass optical fiber is caused by two factors, absorption and scattering. Absorption occurs in several specific wavelengths called water bands due to the absorption by minute amounts of water vapor in the glass. Energy of this type of wave. 3. How is this type of wave created? How was this type of wave discovered? When was this type of wave discovered? Fiber optic signals are created by turning electronic signals in to light. Guiding of light by refraction, the principle that makes fiber optics possible, was first demonstrated by Daniel Colladon and Jacques Babinet in Paris in the early 1840s. John Tyndall included a demonstration of it in his public lectures in London, 12 years later. 4. What is it used for? What are its applications? How or why is it used for that purpose? Fiber optics are used in electronic devices and to

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