Transmission of light through fiber
Attenuation in dB= 10log (transmitted power/recd. Power)
3 bands for comm. 0.85, 1.3, 1.55 micron
dispersion: Light pulses sent down a fiber spread out in a manner that is wavelength dependent. Solution: 1) separate pulses 2) or raised hyperbolic cosines - solitons can propagate 1000 or more km