An optical fiber has an index of refraction n and diameter
Chapter 35, Problem 49(choose chapter or problem)
An optical fiber has an index of refraction n and diameter d. It is surrounded by vacuum. Light is sent into the fiber along its axis as shown in Figure P35.49. (a) Find the smallest outside radius R min permitted for a bend in the fiber if no light is to escape. (b) What If? What result does part (a) predict as d approaches zero? Is this behavior reasonable? Explain. (c) As n increases? (d) As n approaches 1? (e) Evaluate R min assuming the fiber diameter is 100 mm and its index of refraction is 1.40.
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