Utilization of optical fibers and electro-optical devices in optical communications

The current prospects for an employment of optical waveguide systems are examined. It is pointed out that the cost of low-loss fibers renders them unacceptable except in cases in which the unique properties of fiber waveguides warrant the expenditure. These properties include light weight, immunity to environmental factors, and electrical isolation. Questions related to the maximum pulse rate are considered, taking into account dispersion-limited operation, detector noise limited operation, economic implications of maximum pulse rate, and system requirements and considerations.