Question

1. Consider a long optical fiber with index of refraction n = 1.265 that is surrounded by air (There is no cladding). The end of the fiber is polished to be flat and is perpendicular to the length of the fiber. A light ray from a laser is incident from air onto the center of the circular face of the optical fiber. What is the maximum angle of incidence for this light ray such that it will be confined and transported by the optical fiber? (Neglect any reflection as the light ray enters the fiber)

          1. Consider a long optical fiber with index of refraction n = 1.265 that is
surrounded by air (There is no cladding). The end of the fiber is polished to
be flat and is perpendicular to the length of the fiber. A light ray from a
laser is incident from air onto the center of the circular face of the optical
fiber.
What is the maximum angle of incidence for this light ray such that it will be
confined and transported by the optical fiber? (Neglect any reflection as
the light ray enters the fiber)

$1. Consider a long optical fiber with index of refraction n = 1.265 that is surrounded by air (There is no cladding). The end of the fiber is polished to be flat and is perpendicular to the length of the fiber. A light ray from a laser is incident from air onto the center of the circular face of the optical fiber. What is the maximum angle of incidence for this light ray such that it will be confined and transported by the optical fiber? (Neglect any reflection as the light ray enters the fiber)$

Added by Jeremy B.

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