An Optical Fiber Having Index of Refraction 1

question 48

Multiple Choice

An optical fiber having index of refraction 1.40 is clad with a material of index of refraction 1.25. What is the critical angle in the fiber at the fiber-cladding interface?

• A) 63.2°
• B) 26.8°
• C) 41.8°
• D) 73.0°
• E) 16.5°

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