Fiber bragg gratings a fiber bragg grating is written in a fiber (n=1.5) with a strength = 2em and length = 2 cm at 2=1550nm. a) what is the bandwidth of the grating in nm? b) what is the reflectivity (in %) and transmission (in db)? c) if this grating were written in birefringent fiber where the difference in refractive index for the two polarizations, an = 10, what is the separation in grating wavelengths for the two polarizations? d) will this grating be any good for filtering unpolarized light?
Answers: 2
Physics, 21.06.2019 17:00
Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?
Answers: 1
Physics, 22.06.2019 11:50
The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].
Answers: 3
Physics, 22.06.2019 14:00
Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.
Answers: 1
Fiber bragg gratings a fiber bragg grating is written in a fiber (n=1.5) with a strength = 2em and l...
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