The acronym PCS
, in networking
terms, refers to standard plastic-clad silica
. Silica, also known by the term glass
, is the optical core of a fiber-optic cable
. The cladding applied to the outside of the fiber is made of plastic, which has a lower angle of refraction
and keeps the optical signal inside the glass fiber
PCS, if it is not damaged, has an excellent range and a wide bandwidth. It is immune to electro-magnetic interference.