Abstract
The developments in the fields of micro-electronics and fibre optics have made practical the transmission of broadband digital signals carrying large number of voice, video and data channels, over very long as well as short distances. The digital video signals require large bandwidths which arc not normally available on conventional copper cables. The optical fibres are finding increasing applications in digital video transmission because of their large information carrying capacity. Design considerations of an experimental fibre optic link for transmission of digital TV signals at a rate of 10 Mbps are discussed in this paper. The fibre-optic link, designed and implemented in our laboratory, consists of analog-to-digtal converter for TV signals, driver, amplifier and first generation light emitting diode, photo-detector and step index fibre. The analog TV signals are converted into digital form using delta modulation techniques developed in our laboratory.
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