Z. Ghassemlooy et B. Wilson, OPTICAL PWM DATA LINK FOR HIGH-QUALITY VIDEO AND AUDIO SIGNALS, IEEE transactions on consumer electronics, 40(1), 1994, pp. 55-63
A high-speed optical fibre data link is described that uses naturally
sampled pulse width modulation (PWM) to achieve a low bandwidth overhe
ad. The link is suitable for low-distortion transmission of full speci
fication video and audio signals or any analogue signal with a bandwid
th of up to 6.5 MHz over one kilometre of fibre.