Annex 5: Modeling of Digital Photonic Transmission Systems
A5.1 Overview
A digital photonic transmission system can be divided into three main subsystems: optical transmitter, optical fiber channel, and optical receiver, as demonstrated in Figure A5.1.
The first key subsystem is the optical transmitter. The main function of an optical transmitter is to generate lightwaves carrying a particular modulation format. Modulation formats are classified into three groups depending on whether the amplitude, phase, or frequency component of the lightwave carrier is modulated. In modern photonic communications, the modulation process is implemented by using external optical modulators that can be categorized into phase and intensity modulators. The advantages ...
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