1.0 Wavelength-division Multiplexing Technology 1.1 Wavelength-division Multiplexing In fibre optic telecommunications‚ wavelength-division multiplexing (WDM) is a technology which multiplexes multiple optical carrier signals on a single optical fibre by using different wavelengths (colors) of laser light to carry different signals. This allows for a multiplication in capacity‚ in addition to making it possible to perform bidirectional communications over one strand of fiber. (Tomlinson & Lin
Premium Optical fiber
Homeostasis and negative feedback At the end of this topic you should be able to : Define homeostasis Explain why homeostasis is important in living organisms Explain the importance of a constant core temperature in relation to enzyme activity Explain the importance of maintaining constant blood pH in relation to enzyme activity State that homeostasis is usually achieved by negative feedback Define negative feedback Draw a diagram to represent a general negative feedback mechanism Give examples
Premium Feedback Insulin Negative feedback
Motivation and Goal Setting Visualize Success Motivation You are your own best motivator. Your motivation must come from within yourself. Others may try to encourage you‚ but you are the only one who can attain what you desire. You must convince yourself - you can! Success comes in cans! Throughout your college years you will have to make many choices; view these choices as opportunities. Don’t allow yourself to be burden with problems; they are really only challenges. Train yourself from the
Premium Goal Feedback
centaury wireless networking is gaining because of speed and ease of deployment and relatively high network robustness. Modern era of optical communication originated with the invention of LASER 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
Premium Optical fiber Laser
emission from biological systems by use of modern single-photon counting systems. Need and Relevance The field of optics is one of the oldest and most important branches of the sciences. Long before the theory of electromagnetism was developed‚ optical phenomena were studied‚ characterized‚ and used as probes of nature. Since the invention of the laser a half-century ago‚ this tool has become the preeminent source for all studies involving light. It too has revolutionized countless areas of high
Premium Laser Optical fiber Light
problem and calculates on paper. Input: After getting the answer‚ student input the answer and click “submit” button. Process(comparison): This time‚ the “WebAssign” compares the correct answer with the answer input by student. Output/ negative feedback: If the answer input equals to the correct answer‚ system shows “Correct!”. If the answer input is not equal to the correct answer‚ system shows “Try again!” on screen. Correction process: Student will recalculate the problem on paper‚ input
Premium Equals sign Cybernetics Control theory
improving designs during the prototype stage or to obtain information on the performance and structural integrity of components in service. Techniques for embedding fiber optic sensors in metals‚ polymers‚ and ceramics have been investigated. Embedding optical fibers into metals is especially challenging because engineering alloys tend to exhibit high melting temperatures. In the present research an embedding sequence was developed capable of embedding fiber sensors into parts made of metal alloys with
Premium Optical fiber
1. Describe the type(s) of control that could be used to improve the BC Ferries service to prevent an accident such as this occurring again. Be specific. Feedback control proves that while they had an established protocol for situations such as this‚ however‚ the process wasn’t second nature to staff. Feedback also established the need for a master key for sleeping cabins and the need to ensure that staff are trained how to operate any new equipment prior to leaving the shore. Moving forward
Premium Feedback Control theory Psychology
MEDC – 301(A) Information Theory & Coding Unit 1 Introduction to uncertainty‚ information‚ entropy and its properties‚ entropy of binary memory less source and its extension to discrete memory less source‚ coding theorem‚ data compression‚ prefix coding‚ HUFFMAN coding‚ Lempel-Ziv Coding Unit 2 Discrete memory less channels‚ Binary symmetric channel‚ mutual information & its properties‚ channel capacity‚ channel coding theorem‚ and its application to BSC‚ Shannon’s theorem on channel capacity
Premium Optical fiber Coding theory Information theory
History Of Fiber Optics In 1870‚ John Tyndall‚ using a jet of water that flowed from one container to another and a beam of light‚ demonstrated that light used internal reflection to follow a specific path. • Alexander Graham Bell patented an optical telephone system‚ which he called the Photophone • He dreamed of sending signals through the air‚ but the atmosphere didn’t transmit light as reliably as wires carried electricity. • During the 1920s‚ John Logie Baird in England and Clarence W.
Premium Optical fiber Refractive index Total internal reflection