An Optical Fiber Is Made with Core Material of Index

question 43

Multiple Choice

An optical fiber is made with core material of index of refraction 1.30. The fiber is clad with a material of index 1.50. What is the critical angle for this fiber?

• A) 53.1°
• B) 56.4°
• C) 60.1°
• D) With these indices, there is not critical angle.