FREE SPACE OPTICS NEXT GENERATION COMMUNICATION PRESENTED BY V.LAXMANA VENKATA KUMAR 09PA1A04B6 ABSTRACT: FSO may sound new and experimental but in fact it predates optical fiber and has its roots in wartime efforts to develop secure communication systems that did not require
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in 1958 and fabrication of low-loss optical fiber in 1970. When we hear of optical communications we all think of optical fibers‚ what I have for u today is AN OPTICAL COMMUNICATION SYSTEM WITHOUT FIBERS or in other words WIRE FREE OPTICS. Free space optics or FSO –Although it only recently and rather suddenly sprang in to public awareness‚ free space optics is not a new idea. It has roots that 90 back over 30 years-to the era before fiber optic cable became the preferred transport medium for
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ALLIANZE UNIVERSITY COLLEGE OF MEDICAL SCIENCES Physics Lab Experiment Geometrical Optics Name : INTRODUCTION Friction is a force (measured in Newtons) acting along the surfaces of two objects in physical contact that impedes the relative motion of these objects (the motion of one with respect to the other). As such‚ it can be said that friction always acts opposite the motion of the object or the force applied. There are two main types of friction: Static friction: the frictional
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Carbon Fiber report Table of Contents Introduction 3 Historical events of Carbon fiber 3 Properties 4 Applications 4 Conclusion 5 Bibliography 6 Introduction There are a lot of new materials that has emerged and been used by engineers and scientists such as Aerogel‚ Metal foam‚ Bioplastic‚ Carbon fiber‚ Graphene and others. This is helping engineers build all new types of machines and instruments such as touch screen mobiles‚ automobile sensors‚ computers‚ planes and a lot more. This
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1007/s10924-006-0042-3 ORIGINAL PAPER Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites: A Review Xue Li Æ Lope G. Tabil Æ Satyanarayan Panigrahi Published online: 4 January 2007 Ó Springer Science+Business Media‚ LLC 2006 Abstract Studies on the use of natural fibers as replacement to man-made fiber in fiber-reinforced composites have increased and opened up further industrial possibilities. Natural fibers have the advantages of low density‚ low cost‚ and biodegradability
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Research the role of fiber in prevention and or treatment of Cardiovascular Disease and Colon Cancer. * How does fiber prevent and or treat disease? * How much fiber is needed to prevent and or treat disease? * Do you eat the recommended daily amount of fiber for your overall health? * How would you suggest adding fiber to your diet if your diet is currently low in fiber? Below is a link with articles and videos to help you with your research: http://www.ask.com/web?l=s
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"A carbon fiber is a long‚ thin strand of material about 0.005-0.010 mm in diameter and composed mostly of carbon atoms. The carbon atoms are bonded together in microscopic crystals that are more or less aligned parallel to the long axis of the fiber. The crystal alignment makes the fiber incredibly strong for its size. Several thousand carbon fibers are twisted together to form a yarn‚ which may be used by itself or woven into a fabric. The yarn or fabric is combined with epoxy and wound or molded
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recreation applications. A fiber is a hair-like strand of material. “They are the smallest visible unit of a fabric and are denoted by being extremely long in relation to their width. Synthetic fibers are man made from chemicals. They are generally based on polymers and are stronger than natural and regenerated fibers. Synthetic fibers are the result of extensive research by scientists to improve on naturally occurring animal and plant fibers” (NSP). In its physical form synthetic fibers are widely available
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Raman Amplifier Introduction Basic Raman Concept High Power Raman Fiber Lasers Raman Fiber Amplifier Combining EDFA and Raman Amplifier Conclusion January 8‚ 2008 Y. Lin: Raman Amplifier 1 Introduction Raman Amplifier was demonstrated in the 1980s Unavailability of high-power diode laser pump source Why do you need it : amplify signals from 1270 to 1670 nm any optical fiber can serve as the amplifying medium Raman process itself provides high-power laser Disadvantage:
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The Living Fiber For centuries man has gratefully accepted the protective qualities of wool. By the carefully crossbreeding of sheep‚ he has developed fibers of different lengths‚ diameters‚ and various degrees of softness and crispness. Wool is almost custom-made by nature to fit the needs of man. In its processing and manufacture‚ man takes up where sheep left off. But while new processes and treatments have made wool more versatile in its uses‚ man has not improved the fiber itself. Wool
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