With the aid of a labelled diagram, compare the spectral
characteristics of a DFB Laser Diode, a FP Laser Diode and a LED.
Hence, select the device as the best candidate as an optical source
for an optical fiber transmission system. Justify your answer.
The following questions about lasers:
a. Mention and explain the characteristics of the laser beam that
distinguishes it from general light.
b. Write a summary of the working principles of the laser according
to the assignment about the laser you have made.
a. mention and explain the characteristics of the
laser beam that distinguishes it from general light
b. write a summary of the working principles of the laser according
to the assignment about the laser you have made
Briefly describe the main contents and characteristics of the
Four Gospels.
What are the main differences between Buddhist sutras and
Christianity? Explain.
Briefly describe the life of Jesus.
What are the two main differences in the pattern observed in
Young's double-slit experiment compared to the pattern seen in
single-slit diffraction. explain
A
laser had a power output of 2mW and a beam diameter of 2mm. (A)
what is the amplitude of the electric field in the electromagnetic
waves emitted by this device? Find (b) the total energy in a 2
meter length of the laser beam and (c) the momentum transferred to
a perfect mirror by this laser beam. (D) the index of refraction of
water is about 1.33. What is the wavelength in water of a light
wave whose wavelength...
Describe the differences between each of the five pure
production processes. What are the main characteristics of each,
i.e., volume and variety capabilities, unit costs, etc.? Provide an
example of a product or service that would best be produced by each
process.
1. What is diffraction?
2. Diode laser light ( λ = 670 nm) falls on single slit with the
width of slit 0.04 mm. If a screen is 1.05 m away from the slit,
what is Δy1↔1 the distance
between the first dark (m=1)
above the central bright and the first dark
(m=1) below the central
bright?
3. What is interference?
4. Diode laser light ( λ = 670 nm) falls on double slits spaced
0.25 mm. If a screen...
A).
what is the intensity in W/m2 of laser beam used to burn tissue
that, when 90% absorbed, puts 520J of energy into a circular spot
of 2 mm in diameter in 4 s?
B). compare this intensity to the average intensity of
sunlight (about 1 kW/m2)
* *intensity of laser/ avg intensity of sunlight=
C). what is the intensity ratio in dB?
intensity ratio is?