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A GaAs optical source having a refractive index of 3.2 is coupled to a silica fiber having a refractive index of 1.42. Determine Fresnel reflection at interface in terms of percentage.

A GaAs optical source having a refractive index of 3.2 is coupled to a silica fiber having a refractive index of 1.42. Determine Fresnel reflection at interface in terms of percentage. Correct Answer 14.8%

If the fiber end and the source are in close physical contact, the reflection is given by r = ((n1-n)/(n1-n))2 Multiplying r by 100, we get the value of r in terms of percentage.

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