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Describe the differences between the Raman-Nath and Bragg regimes for acousto-optic modulation. A modulator operating in the Bragg regime consists of a slab of lead molybdate (PbM04) with thickness 50 mm and refractive index 2.3 at 633 nm wavelength. An acoustic wave with frequency 80 MHz is launched into the slab parallel with its faces; its velocity in the material is 3.75 x 103 ms-1. At what angle must a 633 nm He-Ne laser beam be launched into the slab in order to suffer maximum deflection? What is the magnitude of the deflection and what is the frequency shift suffered by the deflected beam. Is there any amplitude change? How would you design an optical switch based on this operation?
DRAW THE BLOCK DIAGRAM OF A MULTILEVEL PCM SYSTEM,EXPLAIN THE FUNCTIONS OF EACH BLOCK
a. Implement both functions with one 3:8 decoder and logic gates. b. Implement both functions with one or more 8X1 muxes (and logic gates if needed) c. Implement both functions with 2X4 decoders and logic gates.
Audio data is stored in digital form on a DVD or CD and this data is converted back toanalog form by passing the digital data to a Digital to Analog(D/A) converter. What is the number of bits of resolution that is typically used in consumer audio ..
Consider the system with impulse response \(h(t)=e^{-3t}u(t-1)\) 1. Find the transfer function. 2. Find the Laplace transform of the output when \(x(t)=sin(t)u(t)\)
Terry Walsh knew the time was right to move from being a small, "garage-based" company to a much larger enterprise. After spending years as a research chemist, Terry had launched out on his own. His goal was to develop a top-of-the-line fuel injec..
If you had to explain to a 7-year-old child why engineering is important to society, what information from the history of engineering would you relate? Why?
you have the task of ordering a replacement inductor for one that has become defective. The information on the nameplate has been painted over and cannnot be read. The machine that contains the inductor on 480V at a frequency of 60 Hz.
b. Find the Fourier Transform of signal x(t) (use the Fourier Transform definition) c. Write down the double-sided amplitude and phase spectra x(t) d. Plot the double-sided amplitude and phase spectra of x(t)
Give five examples of things that are measured in semiconductor manufacturing to help maintain quality. Explain how a prober can give a false reading. How is sort different than E-test.
3-phase line, which has an impedance of 2 + j4 per phase, feeds two balanced three-phase loads that are connected in parallel. One of the loads is Y-connected with an impedance of (20 + j40) per phase
S = {c(k + jl) | k = 3, 1, 1, 3 and l = 3, 1, 1, 3 and j = square root of -1, where c is a constant. Determine the value of c to ensure a unit energy constellation. Sketch this constellation. Find d^2 min and label the constellation points with bi..
A circuit computes the product of two numbers, a 4-bit A[3..0]=A3A2A1A0 and a 3-bit B[2..0]=B2B1B0 which they appear in input. The output P[6..0]=P6P5P4P3P2P1P0 represents the answer (e.g. if A=1011 and B=101 then P=0110111).
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