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Define the function of photodetectors in fibre optic communication system.
Photo-detectors:
At the receiver end, conversion of optical signal into analog signal is being done with the help of photo detectors for example photodiode. The photo detectors are required to have
a. High quantum efficiency photon to electron (e-) conversion efficiency
b. Sufficient frequency response speed of response
c. Low dark current: low leakage current into a reverse biased diode within the absence of illumination
d. Low signal dependent noise capable to respond for signal quite than noise
The intermolecular forces (F) of attraction can be described as given: 1) Cohesion. The force of attraction among molecules of the same substance is known as the force of cohe
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What is the echo of the launched pulse? Any discontinuity into the medium of propagation of an ultrasonic pulse provides rise to back-reflection that travels back to the input
Q. Two slits 0.3 mm separately are illuminated by light of wavelength 4500 0A. The screen is placed at a distance 1m from the slits. Find the separation among the second bright fri
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The fringe width in a Young's double slit arrangement is 0.008cm. What could be the fringe width if the slit separation is halved and the screen slit distance is doubled?
Write the commands that will create the following matrix. You can use only special matrix commands: Two cars started to move from zero position with (φ = 35o) as shown. F
Boat A is travelling at 4.6 m/s. Boat B is moving away from boat A at 9.2 m/s, as shown in the figure below. The captain of boat B blows an air horn with a frequency of 550 Hz
what is the delay line of cro?
What are major fiber sensors? Major Fiber Sensors: a. Point sensors: Bragg gratings extended period gratings, Fabry-Perot interferometers. Maximum temperature can be as high
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