longer cable lengths have greater signal attenuation
optical fiber
It is the loss of data from the coaxial cable during transmission .
Attenuation
Attenuation occurs in all copper cable regardless of whether it is twisted or not. This is because the copper atoms actually 'resist" the electrical voltage being applied (a physics principle).
Fibre Optic Cable
1 db
It is not true. Attenuation is higher in twisted pair cable. See related links: It is, because coaxial cable is concluded system and magnetic field of signal in coaxial cable is kept inside the cable so there is little energy losses because no energy is spent on inducing currents outside of cable.
The degeneration of a signal over a distance on a network cable is called attenuation. It does not have any relation with decibels. The strength of signal just gets reduced.
There are three types of attenuation in fibe optics cable. 1). Bending Losses 2). Scattering 3). Absorption
Basically we should also keep in mind knowledge about voltage and current. If we keep voltage constant then by increase in temperature also increase the attenuation, if we keep current constant then attenuation drops by increasing temperature.
The disadvantage is that attenuation increases with frequency above 100 kHz in these cables.