1. A fiber has a core made of dense flint glass and the claddingmaterial made of crown glass. Calculate the following: a) thecritical angle (?c). b) ?2 for ?1 = 15?. c) ?2 for ?1 = 70?. d)numerical aperture (NA). e) Angle of Acceptance, ?accept. f)Acceptance Cone. 2. For a cable with indices of refraction of 1.46and 1.41 for the core and cladding, respectively, calculate themaximum diameter the core have for single-mode propagation at awavelength of 1.5 ?m. 3. A commonly used wavelength for opticalcommunication is 1.55 ?m. a) What type of light is this? b)Calculate the frequency corresponding to
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