hw12_p5406_s06 - HW 12 Phys5406 S06 not graded 1)Light...

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Unformatted text preview: HW 12 Phys5406 S06 not graded 1)Light enters one face of an optical ber, as in the notes, and is to undergo total internal re ection in the ber so that it travels to the other end. For n=1.5 and n=1.33, what are the largest incident angles that allow this. Why would cladding, a thin coat of transparent material, with n=1.25 be helpful in the latter case? Why would cladding of n=1.4 not be helpful? 2)Consider light going (a) from a medium of n=1 to n=1.33 and (b) from 1.33 to 1. Plot the re ection and transmission coecients for polarizations parallel and perpendicular to the plane of indicence as a function of the angle of incidence. In the parallel polarization case (b) note the behavior of the re ection coecient for angles between the critical angle and the Brewster angle. Assuming unpolarized light, that is, the amplitude of the parallel polarization component is the same as that of the perpendicular component, plot the transmission probability as a function of the incident angle. 3)JDJ 7.2 1 ...
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