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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 term pure iron is meant a ferrous material with an extra low carbon content for example low carbon steel and electrolytic iron. In low carbon steel carbon content is less than
Determine the divergence of the vector field at (1, 1, 0).
describe concave grating and rowland mountng
When a pulse is reflected from a free side, then there is no changing of medium. Crest (C) represents as crest (C) and trough (T) denotes as trough (T), Time changes by zero and
Three impedances are connected in series across a 100V, 2kHz supply. The impedances comprise: (i) An inductance of 0.45mH and 2 resistance, (ii) An inductance of 570µH a
It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as
formula to get vi if the givens are distance and acceleration
Explain and write about sonar
from any unit to pascel
Two friends are at the local high school track, a circle measuring 440 yards for one complete lap. Abe can jog at 8.2 miles per hour while Bob’s jogging speed is 4.6 miles per hour
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