Video Over Fiber Using AM Techniques
Amplitude modulation represents the simplest technique for encoding any type of signal. In a baseband system, the input signal directly modulates the strength of the transmitter output. In the RF carrier AM technique, a carrier, with a frequency much higher than the encoded information, varies according to the amplitude of the information being encoded. In a fiber optic system, the magnitude of the voltage input signal directly translates into a corresponding light intensity.
Basics of AM
We know that a video signal contains a range of levels from black to white that equals 140 IRE units. This IRE amount corresponds to 1.0 Vp-p. Thus, one IRE unit equals about 7.14 mVp-p. A picture containing ...
Get Fiber Optic Video Transmission now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
