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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Fibre is an important part of a healthy diet. A diet high in fibre has many health benefits. It can help prevent heart disease‚ diabetes‚ weight gain‚ some cancers‚ and it can also improve digestive health. However‚ many people don’t get enough fibre. On average‚ most people in the UK get about 14g of fibre a day. You should aim for at least 18g a day. Fibre is only found in foods that come from plants. Foods such as meat‚ fish and dairy products don’t contain fibre. There are two different types
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considered when installing cable: • Jacket • Flexibility • Capacitance Aspects of proper design: • A properly designed structured cabling system is based around components or wiring units. An example of a wiring unit is a story of an office building. All the work locations on that floor are connected to a single wiring closet. All of the wiring units can be combined together using backbone cables as part of a larger system. • The transition point is where one type of cable connects to another‚ such
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The main factor that leads to the damage of optic nerve is elevated pressure in the eye. The optic nerve is the main visual nerve of the eye. It transmits the images we see back to the brain for interpretation. The shape and tone of the eye is maintained by a pressure within the eye‚ which ranges between 8 mm and 22 mm of mercury. When this pressure is too low‚ the eye becomes softer‚ while an elevated pressure causes the eye to become harder. The optic nerve is the most susceptible part of the eye
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Case 1: The Warhead Cable Test Dilemma 1) What stage of moral development do you think Stanton Wong is at? What about Harry Jackson? Why do you think so? According to Kohlberg’s moral development theory‚ Stanton Wong is at post-conventional level. At this level‚ right action comes to be defined in terms of moral principles chosen because of their logical comprehensiveness‚ universality and consistency. It is because he is concerned with the well being of the innocent civilians and the military
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ANIMAL FIBER Animal fibers are largely those which cover mammals such as sheep‚ goats and rabbits with well-known examples such as alpaca‚ merino‚ wool‚ fur and mohair. Animal fibers are natural fibers that consist largely of particular proteins. Instances are silk‚ hair/fur (including wool) and feathers. The animal fibers used most commonly both in the manufacturing world as well as by the hand spinners are wool from domestic sheep and silk. Also very popular are alpaca fiber and mohair
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The function of fiber in the body is to help with gastrointestinal health and cholesterol-lowering benefits. Fiber is also an important role in seven other essential nutrients that the body needs to have. Some food sources of dietary fiber are wheat‚ rye‚ oats‚ beans‚ peas are some of the main foods that provide good fiber that can benefit people. Fruits and vegetables are better sources of fiber‚ but people would have to eat more of these foods in order to equal the fiber contributions of beans
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he recommended fiber intake is 20 - 35 grams per day for adults‚ or 10 - 13 grams for every 1‚000 calories in the diet. This recommended amount should come from a combination of soluble and insoluble fiber‚ since each type provides different benefits. While it’s not necessary to track‚ a 3:1 ratio of insoluble to soluble fiber is typical. Although neither type is absorbed by the body‚ they have different properties when mixed with water‚ hence the designation between the two. However‚ due to
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Dietary Fiber Dietary Fiber is the parts of plant that resist digestive enzymes. A few definitions of dietary fibers are nondigestible carbohydrates and lignin that are intrinsic and intact in plants. nondigestible carbohydrates and lignin that are intact in plants. Another definition is the edible parts of plants or analogous carbohydrates that are resistant to digestion and absorption in the human small intestine‚ with complete or partial fermentation in the large intestine. Dietary Fiber are
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