Fiber optic systems are important telecommunication
infrastructure for world-wide broadband networks.
Wide bandwidth signal transmission with low delay is a key
requirement in present day applications.
Optical fibers provide enormous and unsurpassed transmission bandwidth with
negligible latency, and are now the transmission medium of
choice for long distance and high data rate transmission in
telecommunication networks.
This paper gives an overview of fiber optic communication systems including their key
technologies, and also discusses their technological trend towards the next generation.