5402

Physics Wave Optics Level: Misc Level

The separation in linewidth \Delta \lambda. of a coarse WDM system is 2.5nm at a wavelength of 1550 nm.Derive the expression showing the relationship of the frequency bandwidth \Delta\gamma to the linewidth \Delta \lambda ...What is the frequency separation\Delta ffor this coarse WDM system?


5401

Physics Wave Optics Level: Misc Level

Corning makes a dispersion compensating fiber. Explain how it would be used in long -haul optical fiber system.


5206

Physics Wave Optics Level: Misc Level

Explain the polarization of light, using examples to help with your explanation.


5204

Physics Wave Optics Level: Misc Level

Consider two diffraction gratings with the same slit separation, the only difference being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated with a beam of the same monochromatic light, both gratings produce the same separation between orders, but the orders are better defined with the 4- slit grating.

the grating with 4 slits produces the greater separation between orders.

both gratings produce the same separation between orders.

the grating with 3 slits produces the greater separation between orders.


5200

Physics Wave Optics Level: Misc Level

Consider an oil film ( n = 1.50 ) on water ( n =1.33 ) and light of wavelength 600 nm in air, incident on the film. The minimum film thickness for constructive interference of the light in air is:

113. nm

100. nm

200. nm

150. nm


5199

Physics Wave Optics Level: Misc Level

For a beam of light, the direction of polarization is defined as 

the direction of the electric fields vibration.

the beam s direction of travel.

the direction that is mutually perpendicular to the electric and magnetic field vectors.

the direction of the magnetic field s vibration.


5198

Physics Wave Optics Level: Misc Level

Assuming that I is the wavelength of light in oil, for an oil film on water, constructive interference with the minimum film thickness of:

I /4

I /2

I

2 I


5197

Physics Wave Optics Level: Misc Level

If two light waves are coherent, which of the following is NOT necessary?

They must have a constant phase difference at every point in space.

They must have the same amplitude.

They must have the same frequency.

They must have the same velocity.

They must have the same wavelength.


5196

Physics Wave Optics Level: Misc Level

The index of refraction of diamond is 2.42. This means that a given wavelength of light travels 

2.42 times faster in vacuum than it does in diamond.

2.42 times faster in air than it does in diamond.

2.42 times faster in diamond than it does in vacuum.

2.42 times faster in diamond than it does in air.


5173

Physics Wave Optics Level: Misc Level

Consider two diffraction gratings with the same slit separation, the only difference being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated with a beam of the same monochromatic,

a. both gratings produce the same separation between orders.

b. both gratings produce the same separation between orders, but the orders are better defined with the 4- slit grating.

c. the grating with 3 slits produces the greater separation between orders.

d. the grating with 4 slits produces the greater separation between orders.


5152

Physics Wave Optics Level: Misc Level

The index of refraction of diamond is 2.42. This means that a given wavelength of light travel

a. 2.42 times faster in diamond than it does in vacuum.

b. 2.42 times faster in vacuum than it does in diamond.

c. 2.42 times faster in diamond than it does in air.

d. 2.42 times faster in air than it does in diamond.


5151

Physics Wave Optics Level: Misc Level

A). Consider a horizontal plane of  thin film with thickness t. This film is located between air and water. The index of refraction of the film is 1.5 and the index of refraction of water is 1.33. The wavelength of incident wave in the air is y and its frequency in air is f =c /y. Find the wavelength of the light in the water. B).The frequency of the light in water will decrease, increase or stay the same?


5149

Physics Wave Optics Level: Misc Level

Two slits are illuminated by a 479 nm light. The angle between the zeroth order bright band at the center of the screen and the fourth- order bright band is 21.1 degrees. If the screen is 162 cm from the double slit, how far apart is this bright band from  the central peak? Answer in units of cm. B) What is the distance between the two slits? Answer in units of mm.


5142

Physics Wave Optics Level: Misc Level

How many lines per centimeter does a grating have if the third- order occurs at an 16.9 % angle for 5.7 E 2- nm light?

 


5141

Physics Wave Optics Level: Misc Level

In a double slit experiment, it is found that blue light of wavelength 3.6 E2 nm gives a second -order maximum at a certain location on the scren. What wavelength of visible light would have aminimum at the same location?


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