An Optical Fiber Is Made with Core Material of Index

question 49

Multiple Choice

An optical fiber is made with core material of index of refraction 1.6. The fiber is clad with a material of index 1.2. What is the speed of light traveling along the central axis of this fiber?

• A) 2.5 *10⁸ m/s
• B) 1.9 * 10⁸ m/s
• C) 2.0 *10⁸ m/s
• D) 3.0 * 10⁸ m/s

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