'Delta function' diaporamas de présentation

Electro-absorption Modulators

Electro-absorption Modulators. EE232, Spring 2001 Pei-Cheng Ku April 24 & 26, 2001. Optical Modulation. Direct modulation on semiconductor lasers: Output frequency drifts carrier induced (chirp) temperature variation due to carrier modulation

1.54k views • 57 slides

Electro-absorption Modulators

Electro-absorption Modulators. EE232, Spring 2001 Pei-Cheng Ku April 24 & 26, 2001. Optical Modulation. Direct modulation on semiconductor lasers: Output frequency drifts carrier induced (chirp) temperature variation due to carrier modulation

1.12k views • 57 slides

The Discrete Fourier Transform

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Fourier

Fourier. Fourier Analysis. Fourier Analysis. When we analyse a function using Fourier methods, the function is decomposed into its frequency components. This analysis is used in signal processing, filtering. Fourier Analysis.

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Basic Principles of Surface Reflectance

Basic Principles of Surface Reflectance. Thanks to Srinivasa Narasimhan, Ravi Ramamoorthi, Pat Hanrahan. Radiometry and Image Formation. Image Intensities. sensor. source. Need to consider light propagation in a cone. normal. surface element.

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Classical Theory Expectations

Classical Theory Expectations. Equipartition : 1/2k B T per degree of freedom In 3-D electron gas this means 3/2k B T per electron In 3-D atomic lattice this means 3k B T per atom (why?) So one would expect: C V = du/ dT = 3/2n e k B + 3n a k B

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159.235 Graphics & Graphical Programming

159.235 Graphics & Graphical Programming. Lecture 14 - Lines & Circles. Towards the Ideal Line. We can only do a discrete approximation Illuminate pixels as close to the true path as possible, consider bi-level display only Pixels are either lit or not lit. What is an ideal line.

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11.2 Fourier transforms 11.2.1 One-dimensional transforms

Chapter 11 Fourier optics. April 15,17 Fourier transform. 11.2 Fourier transforms 11.2.1 One-dimensional transforms. Complex exponential representation :. In time domain:. Note: Other alternative definitions exist. Notations:. Proof:. ? Fourier transform ? ? Inverse Fourier transform ?.

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Anomalous Diffusion in Heterogeneous Glass-Forming Materials J.S. Langer University of California, Santa Barbara

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Testing for Faults, Looking for Defects

Testing for Faults, Looking for Defects. Vishwani D. Agrawal James J. Danaher Professor Department of Electrical and Computer Engineering Auburn University, Auburn, AL 36849 http://www.eng.auburn.edu/~vagrawal vagrawal@eng.auburn.edu IEEE Latin American Test Workshop, March 2011 Keynote

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Image filtering

Image filtering. Hybrid Images, Oliva et al., http://cvcl.mit.edu/hybridimage.htm. Slides from Steve Seitz and Rick Szeliski. Image filtering. Hybrid Images, Oliva et al., http://cvcl.mit.edu/hybridimage.htm. What is an image?. Images as functions.

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Symmetry and the DTFT

Symmetry and the DTFT. If we know a few things about the symmetry properties of the DTFT, it can make life simpler. First, for a real-valued sequence x(n), the amplitude spectrum (magnitude of the DTFT) is an EVEN function of w . To show this first show that,. Symmetry and the DTFT.

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Convolution

Convolution. A mathematical way of combining two signals to form a third signal. It is the single most important technique in Digital Signal Processing. Using the strategy of impulse decomposition, systems are described by a signal called the impulse response .

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Three-dimensional Quantitative Ultrasound Imaging

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Convolution, Impulse Response, Filters

Convolution, Impulse Response, Filters. In Chapter 5 we Had our first look at LTI systems Considered discrete-time systems, some SISO, some MIMO In Chapter 8 we Revisited SISO discrete-time systems, and considered SISO continuous time systems, with complex inputs and outputs

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Line codes

Line codes. There are several line codes can be used for the electrical representation of binary data stream Many codes are available Only five codes will be considered in these slides A more detailed line codes can be found in the reference books. Basic line codes. Unipolar NRZ. Polar NRZ.

1.53k views • 13 slides

Quantum Mechanics

Quantum Mechanics. Tirtho Biswas Cal Poly Pomona 10 th February. Review. From one to many electron system Non-interacting electrons (first approximation) Solve Schroidinger equation With subject to Boundary conditions Obtain Energy eigenstates

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Ch 6.5: Impulse Functions

Ch 6.5: Impulse Functions. In some applications, it is necessary to deal with phenomena of an impulsive nature.

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