Basic Optics for Optical Fiber – Fosco Connect

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1. Light is an Electromagnetic Wave Fundamentally, light wave is an electromagnetic wave which is described by Maxwell’s Equations. It is composed of electric and magnetic fields. These two fields are perpendicular to each other and to the direction in which the light travels. This is shown in the following figure. The electric and magnetic field amplitude varies with time as a sine wave, just like a since function in trigonometry. Wavelength: Wavelength is the distance between two nearest amplitude positive peaks. The amplitude rises from 0 to a positive peak, goes through 0, goes to negative peak, then returns