Optical transmitters convert an input electronic signal into the optical form sent
through optical fibers. This task involves both electronics and optics, but this chapter, like the rest of the book, concentrates on the optics. It first introduces the basic operational concepts involved in transmitters, then covers how multiplexing generates signals and modulation converts them to optical form. Finally it looks inside the box to show the functional components of transmitters.
Transmitters contain the light sources described in Chapter 9 and encode signals for the receivers covered in Chapter 11. Chapter 12 covers signal amplifiers and regenerators.
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