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Explain the two three-wave interactions which give rise to the stimulated Brillouin scattering phenomenon in optical fibres, including the part played by electrostriction. If the backscattered optical frequency is shifted by 11.75 G Hz from the forward, pump wave at 1550 nm what is the acoustic velocity in the fibre medium if its refractive index is 1.46 at the pump wavelength? Devise a purely electronic means for measuring the amplitude of the frequency-shifted signal, using only a PIN photo detector.
An automobile manufacturer is concerned about a fault in thebraking mechanism of a particular model. The fault can, onrare occasions, cause a catastrophe at high speed. The distrubution of the number of cars per year that will experience
Understand the meaning and function of the LED lightening system - discuss the LED system in comparison to other lighting system
The resulting energy excursion resulted in the destruction of the reactor containment and a large amount of the fission products in the fuel elements were released to the environment as the reactor containment ruptured. Explain why the boiling..
a)How many coulombs of charge are stored in the battery when fully charged?
the schematic of the traffic light controller is as shown in figure. there are three control buttons on the panel haz
1- Name a few computer operating systems. 2- What is the full form for MS-DOS 3- What is the difference between a logical address and aphysical address
Write a program to generate a 25-Hz digital waveform with a 50 percent duty cycle on the PT0 pin as long as the voltage level on the PP7 pin is high. Your program should consist of two parts: Entry test. As long as the PP7 pin is low, it stays in t..
In a 50 mm diameter x 0.5 mm thick wafer of pure germanium at room temperature, (a) how many conduction electrons would be present, and (b) how many electron holes would be present.
The cross section of a sheet steel core is 0.1 m X 0.1 m and its stacking factor is 0.93. If H = 1500 At/m, compute flux density B and magnetic flux .
The heavy-duty rechargeable battery you selected can provide a continuous 9A of current at 12 V for a 4-hour period of operation each night before being completely drained.
Consider a coaxial capacitor having inner radius a, outer radius b, unit length, and filled with a material with a dielectric, εr. Compare this to a parallel plate capacitor having a plate width w, plate sepparation d, filled with the same dielect..
An infinite line of charge sits on the z axis in free space. The linear charge density is p = 1C/m. What is the potential difference at point (2,pi/2,4) with respect to point (5,0,1) assuming both points are in cylindrical coordinates.
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