Engineer Information Communications

Engineer Information Communications (정보통신기사, South Korea)

Information Communications EquipmentEnglish
Exam overview

Practice session

An optical fiber has a core refractive index of n1 = 1.48 and a cladding refractive index of n2 = 1.46. What is the approximate Numerical Aperture (NA, 개구수) of this optical fiber?

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