Question

3. An optical fiber is illuminated by light from a source. The refractive indexes of the core and cladding of the fiber are n1 and n2, respectively, and refractive index of air is 1. (a) Draw cross-sectional picture of the fiber with showing cladding and core regions. (b) Show that the numerical aperture of the fiber is equal to below given formula where angle ?? is the acceptance angle of the fiber. NA = sin ?? = ?(n?² - n?²) (c) Calculate the numerical aperture and acceptance angle for fiber having core and cladding refractive indices equal to ncore=1.5 and ncladd=1.485 .

          3. An optical fiber is illuminated by light from a source. The refractive indexes of the core and cladding of the fiber are n1 and n2, respectively, and refractive index of air is 1.
(a) Draw cross-sectional picture of the fiber with showing cladding and core regions.
(b) Show that the numerical aperture of the fiber is equal to below given formula where angle ?? is the acceptance angle of the fiber.
NA = sin ?? = ?(n?² - n?²)
(c) Calculate the numerical aperture and acceptance angle for fiber having core and cladding refractive indices equal to ncore=1.5 and ncladd=1.485 .

$3. An optical fiber is illuminated by light from a source. The refractive indexes of the core and cladding of the fiber are n1 and n2, respectively, and refractive index of air is 1. (a) Draw cross-sectional picture of the fiber with showing cladding and core regions. (b) Show that the numerical aperture of the fiber is equal to below given formula where angle ?? is the acceptance angle of the fiber. NA = sin ?? = ?(n?² - n?²) (c) Calculate the numerical aperture and acceptance angle for fiber having core and cladding refractive indices equal to ncore=1.5 and ncladd=1.485 .$

Added by Kelly S.

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