Abstract
Until recently the design of digital optical receivers revolved around the characteristics of the photodetector, structure of the preamplifier, and characteristics of the discrete components from which the preamplifier and regenerative sections of the receiver were made. The circuit designs for these sections had in many cases evolved from designs originally conceived for copper cable and digital radio systems. Today’s commercially available high-speed digital fiber-optic transmission systems operate up to the Gb/s range. This has required the development of improved electrooptical components and more highly integrated circuits that make up the functional blocks of a regenerative repeater. These functional blocks include automatic gain control (AGC) amplifiers, timing recovery circuits, and regenerator circuits.
© 1987 Optical Society of America
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