CATV Community Antenna TeleVision. C-Band A frequency that ranges from four to six gigahertz and is used by many communications satellites. Channel Transmission path used by a telecommunications signal. CCTV Closed-circuit television. Chromatic Dispersion Different wavelengths travel along an optical medium at different speeds.
Wavelengths reach the end of the medium at different times, causing the light pulse to spread.
It is the sum of material and waveguide dispersions. Cladding The layer of material, usually glass, that immediately surrounds the glass core and has a lower index of refraction. The cladding may becoated with an additional layer, sometimes two, for protection. A process based on expanded rubber sleeves that allows power cables to be spliced quickly without heating. DWDM uses the colours within light waves to increase the capacity of existing links on fiber-optic cables.