Why do we use wavelength and not frequency in optical communication discussions ?
Answers
Answered by
0
Its due to the absorption characteristics of the glass material used in fibers. For short wavelengths Rayleigh scattering of inhomogeneities becomes important and towards UV wavelengths electronic absorption starts to kick in. At around 1400nm there is a strong absorption from OH^- groups. This leaves two windows for telecommunication with similarly low absorption: one around 1300nm and another one around 1500nm. For larger wavelengths infrared absorption starts to increase
Similar questions