Question

2. Define numerical aperture and derive an expression for
numerical aperture and angle of acceptance of fiber in terms
of refractive index of the core and cladding. Mention
six advantages of optical fiber for communication as a wave
guide.​

Answer 1

Definition: Numerical Aperture is the measure of the ability of an optical fiber to collect or confine the incident light ray inside it. As acceptance angle is that max angle through which light enters the fiber. ...☺