An Unclad Optical Fiber Has Index of Refraction 1

question 21

Multiple Choice

An unclad optical fiber has index of refraction 1.70. What is the acceptance angle for this fiber? The acceptance angle is the greatest angle at which the light enters the end of the fiber and still causes total internal reflection.

• A) 38.7°
• B) 51.3°
• C) 39.7°
• D) Any angle will be accepted.

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