We would like to design an optical fiber used in vacuum and require that the transmitted light inside the optical fiber will not refract out when it hits the boundary at an angle of incidence θ > 64.2°. What is the minimum index of refraction of the material we should use?
We would like to design an optical fiber used in vacuum and require that the transmitted light inside the optical fiber will not refract out when it hits the boundary at an angle of incidence θ > 64.2°. What is the minimum index of refraction of the material we should use?
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We would like to design an optical fiber used in vacuum and require that the transmitted light inside the optical fiber will not refract out when it hits the boundary at an angle of incidence θ > 64.2°. What is the minimum index of refraction of the material we should use?
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