Advanced Optical Modulation Formats in High-speed Lightwave System by Sen Zhang Submitted to the Department of Electrical Engineering and Computer Science and the Faculty of the Graduate School of the University of Kansas in partial fulfillment of the requirements for the degree of Master of Science _________________________________ Professor in Charge _________________________________ _________________________________ Committee Members ________________________ Date thesis accepted
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light bulbs and LEDs. 3. Laser-(light amplification by stimulated emission of radiation) used to provide the high-powered‚ tightly controlled light wavelengths necessary for high-speed‚ long-distance optical fiber transmission. 4. Output Pattern-is the energy couples into the core of the optical fiber. 5. Output Power- allows transmission distances. 6. Modulation Speed- is something that can limit the performance of a fiber-optic communication system. 7. Core Diameter Mismatch- will cause confusion
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chemicals that make up the fiber must be deposited with precise control and symmetry to maintain consistent core/clad concentricity performance throughout the entire length of fiber. Fiber curl is the inherent curvature along a specific length of optical fiber that is exhibited
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written feedback To be aware of the consequences and aims of different types of feedback To be aware of different teacher roles To practice giving constructive feedback. Looking at your own experience as a learner: What types of response or feedback have you received on your writing? When in school‚ did you revise your texts and write second or third drafts or did you only correct the surface mistakes? How did your teachers mark the mistakes? Did they suggest solutions? What kind of feedback helped
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A splice is a permanent connection of two optical fibers. Once the two optical fibers are joined with a splice‚ they cannot be taken apart and put back together as they can if you join them using connectors. A splice is typically employed for one of three reasons: to repair a damaged cable‚ to extend the length of a cable‚ or to join two different cable types. (Andrew Olivier‚ 2011‚ p. 617) There are some things that can affect splicing performance. There is Cladding Diameter which occurs when the
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IB Environmental Systems and Societies Unit 1 Systems and Models “Nautre Does nothing uselessly” Aristotle (384 – 322 BC) Assessment statement 1.1.1 Outline the concept and characteristics of systems. Apply the systems concept on a range of scales. Teacher’s notes The emphasis will be on ecosystems but some mention should be made of economic‚ social and value systems. The range must include a small-scale local ecosystem‚ a large ecosystem such as a biome‚ and Gaia as an example of a global
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As a group we have assessed group 1’s presentation on Usain Bolt and his leadership styles/theories. Their presentation was agreeable on the fact that they provided 3 or more leadership theories based upon the relevant information‚ and was as a whole able to obtain the purpose of the whole presentation. When it came down to the presentation structure‚ our group has agreed to give them a score of 1‚ where we were able to identify that they demonstrated a clear structure with their visuals‚ numbers
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Utilizes feedback mechanisms to keep the controlled variable near the set point Many different homeostatic mechanisms take place simultaneously Homeostasis Feedback loops Controlled condition Effector Sensor (receptor) Control center Feedback loops Negative feedback: changes in a variable lead to changes that oppose the initial change Most common type of feedback Prevents uncontrolled or exploding changes from the set point Self-limiting Example of negative feedback Feedback loops Positive
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mode optical fibers. This affects due to the length of the light that is emitted through wave lengths. The best way for one to avoid these affects is to make sure that the ratings match and the splicing is perfect along with the end faces meeting together. Next thing to discuss are the 3 factors for intrinsic performance. These factors are Numerical Aperture Mismatch‚ Core Diameter Mismatch‚ and Mode field Diameter Mismatch. A Numerical Aperture Mismatch can occur when the NA of one optical fiber
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of Fiber Optics An optical fiber is a thin and flexible fiber that carries the light between the two ends of the fiber. Optical fibers are widely used in Fiber Optic Communications‚ which is the transmission over longer distances at higher bandwidths than other communications. A fiber optic communication system consists of three components: an optical transmitter‚ a fiber optic cable‚ and an optical receiver. The optical transmitter converts electrical signal to optical signal; the fiber cable
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