Page 6 - Flipped book_fiber optics

DEFINE LIGHT PROPAGATION

-Wavelength is the distance between two

identical points of two successive cycles of the

wave.

-Period is the time it takes a wave two identical

points to pass, in sequence, the same space

location.

The wavelength and the period of the

wave are related through wave velocity.

-The period, T is the time it takes a wave to travel the

distance equal to one wavelength, λ, at velocity, c.

-On the other hand, a wavelength λ, is the distance

travelled by a wave per one period, T at velocity, c.

Therefore light velocity is equal to wavelength

divided by period,

c = λ/T