Transmission Medium
Optical fiber
- 2 to 124 um flexible medium
- conducts and optical ray
- core: innermost section; cladding: middle section forms a plastic coating over the core; jacket: the outer most section covering the cladding
- data rates of 2Gbps over tens of km
- significantly low attenuation
- not susceptible to interference or crosstalk
- used for: long haul, metropolitan, and rural trunks, subscriber loops and LANs